The research in phase i is a two-fold effort. first, to optimize existing first and second generation x-ray image intensifiers, a comprehensive research program will be established to evaluate all critical parameters. second, to create a real-time analog/digital x-ray image detector, a… More

Recent work performed at nswc, white oak, md has shown that conventional laue x-ray transmission patterns obtained by film methods give an indication of grown-in microstructural deformation of holsten class d rdx energetic materials. the object of this study is to determine if x-ray laue patterns… More

The proposed research work is a response to the national defense effort of the united states of america to ultimately manufacture a low cost, reliable and effective turnable frequency far infrared (ir) detector that can be placed upon both our offensive and defensive weapons systems. the material… More

With the dod hgcdte and gaas programs moving toward epitaxial growth technology there is a need to develop real-time materials characterization techniques of both substrates and/or epitaxial films quickly for production environments. real-time x-ray topography of which brimrose is a pioneer is one… More

Several investigations have been conducted into the existance and phenomenalogical origin of cavities in rdx. these studies clearly highlight the relevance of growth variables/parameters in the ultimate quality of rdx crystals. some of the most significant factors affecting the size, density and… More

Numerous studies have been conducted into the microstructural origin of the instability and unpredictability of various energetic materials. some of these materials are rdx/hmx, ammonium perchlorate, aluminum, etc. many techniques both destructive and nondestructive have so far been utilized in an… More

Numerous studies conducted in the past have clearly established the strong correlation between the microstructure and the energetic properties of solid propellants such as rdx,hmx, al, nh(4)cl0(4), etc. the present study will examine the feasibility of using a noncontact, non-destructive x-ray… More

A recent breakthrough in fatigue failure prediction has been demonstrated by a method known as darc (digital automated rocking curve) diffractometry. this method is a non-destructive x-ray procedure which measures directly the accrued microstructural damage, thus permitting an assessment of the… More

Ii-vi semiconductors based infrared device technology is becoming increasingly important for military applications, especially in ranges of 3-5 micrometers and 8-14 micrometers which correspond to atmospheric windows. it has been conclusively established that performance of these devices depends… More

The objective of this program is to fabricate an inline fiber-optic modulator. with our experience in building acousto-optic devices we have developed a unique bonding technique which allows us to bond any piezoelectric crystal to any substrate. in the last three years, brimrose has been a pioneer… More

This proposal is a unique and innovative approach to constructing 2-d gaas acousto-optic light deflectors for high power laser applications without the use of mirrors. advantages of such system over conventional laser beam mirrors are the inability of mirrors to deflect at high speeds due to the… More

With the interest in the development of very fast computers, much faster than the conventional digital chip-based system, the future seems very bright for optical-signal processing. two-dimensional optical processing is being used for pattern recognition, machine vision, and optical computing.… More

Mercury cadmium telluride (mct) has emerged as the superior material for infrared applications in important 3-5 micrometer and 8-13 micrometer ranges corresponding to atmospheric windows. bulk growth methods cannot provide device grade large area crystals of this material. hence, in order to realize… More

Recent advances in state-of-the-art laser technology should permit the development of detecting and localizing torpedos using blue-green xenon chlorider lasers, steered by bragg cells to define a protective envelope or perimeter around a moving ship. brimrose proposes to examine conventional mirror… More

The proposed research is aimed at improving the understanding of the effect of microgravity on vapor transport and crystal growth. to achieve this goal it is very important to design and optimize systematically ground based experiments which is the focus of this research. the past experimental work… More

Acousto-optic (ao) bragg cells offer the advantages of relatively low power consumption and the ability to produce multiple output optical beams of varying intensity for one beam entering the system. the major disadvantage of theao device is its acoustic waveform propagation delay, which sets a… More

This research proposal deals with the real time study of theeffect of gravity driven convection on solid-liquid interface during the crystal growth from melt. the proposedstudy will make use of a novel technique to visualize 'insitu' the solid liquid interface, which was recently developed at… More

Acousto-optic (a-o) bragg cells play an important role in signal processing systems due to their real time processing capabilities, as well as their conversion capabilities of a function of time to a function of space and time. in this program, brimrose will investigate, design and fabricate… More

Numerous areas of biochemical, biophysical and medical research depend upon measurements of time-resolved fluorescence and more recently, of time-dependent photon migration in tissues. in recent years these phenomena have been studied by the technique of frequency-domain fluorometry (fredof), which… More

With the gradual replacement of electronic computational systems for high throughput, extremely fast, optical signal processors (optical computers, correlators, etc.) in the nuclear warfare arena, the need exists to evaluate optical signal processor components in both real and simulated nuclear… More

A unique blue/green high powered laser system for tactical submarine communications is proposed. the proposed system combines the concepts of double beams modulation (dbm) and optoelectroni heterodyne (oehd) has many advantages over the current incoherent optical system (because of the spatial… More

Acousto-optic and electro-optic deflectors can be used as a very fast and accurate laer beam steering and pointing devices with no moving parts. compared to a mechanical gimbal, they are small size (in a range of 1/2x1/2x1/2 inch), lightweight, and low power consumption. the latest technological… More

Increasing use of fura-2 and other dual excitation probes have highlighted the advantages of the ratio method for determining intracellular ion concentrations. this has fostered the development of new probes (e. g., for na+, k+, h+, and mg2+) with which ion concentrations are determined as a… More

A light induced phase grating in photorefractive crystals couple the optical fields of the pump and signals beam in a very similar way as a beam splitter combines the signal and local optical fields in a coherent optical communications receiver. The advantages of photorefractive crystals are: 1) the… More

Brimrose Corporation, Phase I objective is to use the in house developed "multipolar" low temperature/low energy, mixed, ion beam assisted MOCVD process and to demonstrate that pseudomorphic HEMT structures, comparable in quality to MBE material, can be grown at low substrate temperatures. Samples… More

With the very wide range of applications of acousto-optic signal processing and optical communication in nuclear warfare arms, the need exists to evaluate optical signal processors components in both real and simulated nuclear environments. also the use of acousto-optic devices for a commercial… More

Brimrose proposes to research and build in this Phase I program, a novel miniature spectroradiometer for measuring spectral incident, reflected, and transmitted irradiance of floating ice ocvers at visible wavelength (400-700 nm). This spectroradiometer is incorporated with a Brimrose acousto-optic… More

BRIMROSE CORPORATION PROPOSES TO INVESTIGATE, DESIGN AND DEMONSTRATE A NOVEL OPTICAL BISTABLE DEVICE WITH A THRESHOLD OPTICAL INTENSITY SEVERAL ORDERS OF MAGNITUDE LOWER THAN THE CONVENTIONAL DEVICES. THIS DEVICE WILL OPERATE AT ROOM TEMPERATURE USING A LOW POWER CW LASER. ADVANTAGE OF SUCH A DEVICE… More

IR DETECTOR MATERIAL, MERCURY CADMIUM TELLURIDE HAS BEEN THE MOST MATURES AND OFTEN A MATERIAL OF CHOICE FOR ADVACNED INFRARED DETECTION. HOWEVER, IT IS EXTREMELY DIFFICULT TO PRODUCE THE MATERIAL FOR DETECTION AT A WAVELENGTH GREATER THAN 14um. THIS PROBLEM IS DUE TO EXCCESSIVE FUNNELLING AND… More

Brimrose proposes to research and develop, in this SBIR program, a prototype minature, polarization-insensitive, acousto-optically tuned filter. This filter will be capable of high speed, mechanical-free electronic tuning over a broad wavelength region with high resolution, sensitivity and… More

Brimrose proposes to research and build in this SBIR Phase I program, a miniature optically based immunosensor for biodetection. By combining state of the art guide-wave technology, integrated optics and acousto-optics, this biosensor offers advantages of high sensitivity, extra fast speed,… More

In this SBIR program, Brimrose proposed to build and develop a miniature solid-state spectrometer capable of determining the identity of individual petrochemical fuels in fluid flow channels and reacting to their presence by automatically implementing safety control processes. Optical spectral… More

There has been a significant increase in the use of integrated-optic devices in military applications ranging from data communication and telecommunication networks to antenna remoting, missile guidance and various sensors and instruments. To guarantee the reliability of all military systems which… More

This proposal deals with the growth of a relatively new class of photorefractive semiconductor, Vanadium Doped ZnTe, which has fast response at relatively low intensity and high sensitivity required for real-time applications. Brimrose Corporation, in collaboration with the Center for Photonic… More

Brimrose will research and build in this SBIR Phase I program, a monolithic integrated electronically tunable IR filter for middle atmosphere temperature profiling and high resolution spectroscopy. The filter is based upon the combined acousto-optic and electro-optic multiple interference effects. … More

In the proposed research we will investigate methods for improving the performance of very long wavelength infrared (VLWIR) photovoltaic detectors fabricated from Hg1-xMnxTe. This material was chosen because Hg1-xMnxTe has been shown to have superior mechanical, chemical and thermal stability… More

The potential use of chemical or biological agents by forces hostile to the U.S. has necessitated that the ability to monitor the battlefield for these agents. In this SBIR Phase I program, Brimrose will develop an acousto-optic tunable filter-based (AOTF) fluorometer that will provide the… More

During the proposed phase I research program, Brimrose will develop and produce an improved material for optical power limiting to protect against jamming and build a prototype of this device. Using vanadium doped zinc telluride, we will fabricate an electro-optic power limiter (EOPL) that operates… More

Brimrose Corporation has developed a novel low-temperature and low energy ion-beam assisted growth process for minimizing the problems and improving the quality of the hetero epitaxial films of III-V compound semiconductors on foreign substrates such as silicon, germanium, etc. The improvement in… More

Phase I technical objectives of Brimrose Corporation are two fold. They are: 1) Epitaxial growth of AlxGa1-xN solar blind detector material device structure on new lattice and thermal matched substrates and evaluation of the material properties. The film growth will be carried out in Brimrose… More

Brimrose proposes to produce an improved material for optical power l miting at near infrared wavelengths to protect sensors against jamming and to build a prototype device. The proposed material, vanadium doped cadmium telluride, is relatively new and will be used to fabricate an electro-optic… More

Crosswind influences the accuracy of sharpshooting at short, medium and large ranges. At large shooting ranges, crosswind becomes the largest component in the error budget of sniper weapons. The crosswind along the path deflects the bullet horizontally from its aim point at the target. Medium… More

Brimrose proposes to develop a relatively new class of materials to build electro-optic power limiter (EOPL) to protect optical sensors against jamming and for personnel protection against laser beams. These materials are transition metal doped II-VI semiconductors, cadmium manganese telluride… More

Using newly developed II-VI photorefractive semiconductors as time integrator and high performance TeO2 acousto optic deflectors (AODs), Brimrose proposes to develop a compact RF signal processor useful in radar signal processing. The high sensitivity of this relatively new photorefractives, in the… More

Brimrose Corporation's Phase I technical objective is to optimize the Brimrose Corporation's `ECR' Plasma Enhanced CVD processing method for growing homoepitaxially high quality SiC layers on semi-insulating 4H-SiC and heteroepitaxially on closely lattice matched and highly conducting Nb2C… More

Brimrose proposes to develop miniaturized acousto-optic tunable filter (AOTF)based multi-spectral imaging radiometer. This radiometer will operate in the wavelength range of 1 to 2.5um. We propose a novel fabrication procedure to make it capable of withstanding extreme environments of space. It… More

A high precision laser range finder is proposed for applications in spaceborne telescopes and interferometers. A new kind of spatially adaptive optical frequency sensor is integrated with the Coherent Frequency Domain Reflectometry, leading to high precision laser range finder with broad measurement… More

65451 In-line, near-infrared spectrometry is typically used as a method of real-time feedback control during the manufacturing of polymers. However, this method cannot sufficiently measure all of the parameters (such as the melt index) needed for optimal process control, resulting in reduced… More

A high precision, adaptive, and low-cost laser velocimeter is proposed for aerodynamic applications. We adopt a new kind of optical Doppler frequency sensor to detect Doppler frequency shifts caused by air flows. High speed investigation of aerodynamics is enabled by the fast response times of the… More

"Brimrose Corporation has identified 0.75, 1.0, 1.5 and 1.91 eV band gap III-V semiconductor materials, lattice matched to InP for producing high efficiency 4- junction solar cells for space application. Phase I objective are follows: (1) Optimize theepitaxial growth of 0.75 and 1.0 eV materials… More

A high precision, adaptive, and low-cost laser velocimeter is proposed for aerodynamic applications. We adopt a new kind of optical Doppler frequency sensor to detect Doppler frequency shifts caused by air flows. High speed investigation of aerodynamics is enabled by the fast response times of the… More

70104 Current solar spectral instruments either measure light intensity at discrete wavelengths and/or have poor wavelength resolution. Some also contain moving parts that are vulnerable to vibration. These factors limit the performance and accuracy of information derived from the acquired… More

A high precision, adaptive, and low-cost laser velocimeter is proposed for aerodynamic applications. We adopt a new kind of optical Doppler frequency sensor to detect Doppler frequency shifts caused by air flows. High speed investigation of aerodynamics is enabled by the fast response times of the… More

"We present in this proposal an interferometer-less optical topographic mapping technique capable of monitoring, for example, the surface quality of coatings on the optics to be deployed in the ABL program. Unlike crystal monitors that are displaced awayfrom the optic under coating, our proposed… More

Brimrose proposes to develop a miniaturized, light weight acousto-optic tunable filter spectrometer for hyperspectral imaging in the visible-infrared wavelength range (500 - 2200 nm) that is capable of withstanding the harsh environment of space. AOTF spectrometers have several advantages over… More

Brimrose proposes to develop miniaturized acousto-optic tunable filter (AOTF)based multi-spectral imaging radiometer. This radiometer will operate in the wavelength range of 1 to 2.5um. We propose a novel fabrication procedure to make it capable of withstanding extreme environments of space. It… More

Brimrose proposes to develop miniaturized acousto-optic tunable filter (AOTF)based multi-spectral imaging radiometer. This radiometer will operate in the wavelength range of 1 to 2.5um. We propose a novel fabrication procedure to make it capable of withstanding extreme environments of space. It… More

70104S02-II Existing devices for collecting atmospheric radiation measurements have many limitations to the performance and accuracy of information derived from the acquired data. For example, some devices can obtain information only at certain fixed wavelengths, some have low spectral… More

70104S02-II Existing devices for collecting atmospheric radiation measurements have many limitations to the performance and accuracy of information derived from the acquired data. For example, some devices can obtain information only at certain fixed wavelengths, some have low spectral… More

This Small Business Innovation Research Phase I project involves the development of material that is suitable for the fabrication of a tunable, room temperature, mid-infrared thin disk laser. Novel, tunable room temperature solid-state laser material using transition metal doped Cd1-xMnxTe has… More

Terahertz radiation is an ideal candidate for non-invasive interrogation of concealed objects and substances. As such, there is an increased need for reliable high-quality nonlinear materials for the generation and detection of THz radiation. Zinc telluride (ZnTe) and gallium phosphide (GaP) are the… More

We propose to develop novel anisotropic materials that can be used to fabricate acousto-optic tunable filter (AOTF)-based spectral imaging systems in the LWIR (8 to 12 micron) spectral region. AOTF's are very attractive for multispectral and hyperspectral applications such as the detection of… More

Tunable solid state lasers have played an important role in providing the technology necessary for active remote sensing of the atmosphere. Recently, polycrystalline ceramic laser materials have become of great interest for diode-pumped solid state lasers. Compared to single-crystals, ceramic laser… More

Future space missions will require Solar cell arrays having specific power ratings in excess of 1000 W/kg. Conventional crystalline photovoltaic technology comprised of epitaxial photovoltaic semiconductor materials grown on single crystal semiconductor substrates, cannot provide these specific… More

A light-weight, compact, high sensitivity pulsed laser vibrometer is proposed using photo-EMF sensors for the non-contact detection and mapping of buried landmines. The fast response times (~ ns) and high sensitivity of the photo-EMF sensors allow continuous and real-time monitoring of vibration… More

Based on the success of developing high sensitivity laser vibrometers for landmine detections during the Phase I program, technologies are proposed for this Phase II research program to improve further the sensitivity and accuracy in locating buried landmines as well as increases in the efficiency… More

The sugar beet is the most economically important among the beet family. Sugar yield is the highest importance to sugar beet growers. Currently, growers do not have a means to estimate sucrose content during the season in their sugar beet fields. Sucrose determinations happen at the factory upon… More

In Phase I we developed novel anisotropic materials that can be used to fabricate acousto-optic tunable filter (AOTF)-based spectral imaging systems in the LWIR (8 to 12 micron) spectral region. This long wave infrared (LWIR) region technology is an essential part of achieving the goals set forth… More

In Phase II we will develop transparent Nd:Yttria ceramic laser materials that can operate at 914 nm and 946 nm suitable for applications in ozone LIDAR systems. We will strive to further optimize Nd:Yttria ceramics with a focus on improving the overall transmission of the material as well as… More

We propose an innovative pulsed laser vibrometer technology for the monitoring of interior noise inside an aircraft. The optical speckle-tolerant nature of the pulsed laser vibrometer, coupled with its high sensitivity and bandwidth in surface vibration monitoring, makes the proposed technology… More

We propose to develop and fabricate an optical scanner required to address a 2-D array of trapped Rubidium atomic qubits with two lasers simultaneously. One of the most scalable approaches to quantum information processing (QIP) is Optical addressing of arrays of trapped atoms. This is done with… More

We propose to develop a compact, robust, optically-based sensor for making temperature and multi-species concentration measurements in aircraft system ground and flight test environments. This system will utilize a widely tunable near infrared light source to make absorption measurements of gas… More

The Phase I objective is to demonstrate dislocation reduction in both cadmium telluride (CdTe) and subsequent HgCdTe epitaxial layers grown on silicon substrate using an intermediate nanocrystalline CdTe buffer layer of optimized thickness and size. Nanocrystalline CdTe buffer layer will be… More

Large format, low cost, reliable and high performance infrared focal plane arrays are essential for the Army's Third Generation IR Imaging Technology. HgCdTe (MCT) detectors fabricated on silicon substrates are an attractive alternative generating considerable interest. State of the art technology… More

Laser-induced breakdown spectroscopy (LIBS) has shown great promise for applications in chemical, biological and explosive (CBE) sensing [1-12]. Nearly all previous LIBS experiments were limited to measurements in the UV-VIS and NIR. However, molecules exhibit spectroscopic signatures in the MIR to… More

We propose to develop a compact, robust, optically-based sensor for local and remote sensing of oxygen (O2) at 1.26

We propose to develop a scanning photoacoustic spectroscopic (PAS) system fitted with a novel laser microphone for the remote scanning of targeted molecules and chemical compounds. By leveraging the acoustic signatures emitted by the target molecules, the proposed PAS technology offers better… More

There is a current need for an active standoff system that can detect and classify surfaces that have been contaminated with chemical, biological and explosive (CBE) materials. Laser-Induced Breakdown Spectroscopy (LIBS) and Laser Induced Thermal Emission (LITE) has shown great promise for detection… More