In the program proposed here we intend to demonstrate coherent beam addition of two single-axial-mode nd lasers operating at 1.06 microns. the significance of this work is the demonstration of phase-locking employing a well-developed solid-state laser material, which has been used extensively as a… More

The proposed effort is to analyze, design and construct an optical ranging system to be used as a collision avoidance sensor. while laser rangers have been used by the industrial and military commmunities for many years, these designs are for application different from the collision avoidance and… More

The program proposed here will study the properties of a potential near-infrared-wavelength, tunable solid state laser. the active ion, trivalent titanium, has previously demonstrated broadly tunable operation in the host crystal sapphire, but is characterized by an upper-state lifetime too short… More

Some of the laser radars proposed for space-based sensors engaged in survbeillance, acquisition and tracking for the strategic defense initiative may require the use of single- frequency lasers for coherent, heterodyne detection of return signals. in some sensor configurations the relative… More

The major portion of the effort will be to develop a co:mgf2 laser system suitable for use in possible nasa missions. most of the work on co:mgf2 lasers has involved the use of liquid nitrogen for cooling of the crystal, a major inconvenience for practical applications. the proposed research would,… More

Recent studies to improve the efficiency of lamp-pumped solid state lasers have shown that chromium (cr) sensitization of the neodymium (nd) ion is effective in the host crystal gadolinium scandium gallium garnet (gsgg). in this proposal a study will be made of the crsensitization of another… More

The ti:sapphire solid state laser is one of the more promising sources for space-based dial systems operating in the near-infrared region from 700-1000 nm. when pumped by apulsed, frequency-doubled neodymium (nd) laser, the ti: sapphire laser achieves nearly quantum-limited conversion of pump energy… More

The effort proposed here will investigate the feasibility of developing diode-pumped, solid state lasers for use in space-based, eye-safe coherent lidar systems. the work will include a thorough theoretical study of three potential rare-earth laser ions, erbium, holmium and thulium, and will include… More

The increasing importance of lasers for surgical applications has resulted in new research into the inter- action between laser radiation and tissue. from this research has come an understanding of the requirements for surgical lasers that maximize the ablation of tissue and minimize damage to… More

The proposed program invlolves the construction of a bread- board 2.1 micron lidar aerosol profiler and measurements of aerosol backscatter. the lidar will utilize a new and unique, room temperature, eye-safe holmium laser commercial-ly sold by schwartz electro-optics (seo). this efficient, solid… More

The shortcomings of the widely used buried-loop vehicle de- tector -- 3 to 5 year lifetime, costly, inconvenient to maintain/reple, incompatible with some roadways, unreliable activation by some vehicles -- can be overcome through the use of overhead infrared vehicle detectors. the technical… More

Advances in the development of tunable solid-state laser materials for the near-infrared provides us with the opportunity to develop a class of high performance laser systems that over-come the limitations of presently available dye lasers. in particular, the broadly tunable ti:al(2)o(3) system is… More

Seo proposes a phase i study program to assess the feasibility of a radiation hard q-switched nd:cr:gsgg fiber laser for use in a fiber optics ordnance system. seo will improve coupling efficiency between the initiator and optical fibers and also improve ionization resistance to nucelar weapons… More

The intensity, intensity-gradient, range, and range gradient measurement capabilities of laser imaging radar systems should permit the detection, recognition, and identification of virtually any tupe of target if there is an adequate signal-to-noise ratio. schwartz electro-optics proposes to develop… More

This research will investigate the medical applications of atunable, mid-infrared solid-state laser based on the crystalco:mgf2. applications requiring precise tissure ablation via fiber delivery, such as angioplasty , appear particular appropriate for the system. the co:mgf2 laser tunability , over… More

The proposed effort will attempt to demonstrate reliable and efficient operation of a cdse optical parametric oscillator (opo) pumped by a solid-state 3 micron erbium laser. the expected tuning range of the opo is 3.5-4.5 microns. this phase i effort represents a first step in the development of a… More

Diode-pumped solid state lasers are compact, relatively efficient, long-lifetime sources of coherent radiation and are will-suited to a number of nasa space-based, active remote-sensing systems. we propose to combine the use of a diode-array-pumped neodymium (nd) laser with pulse-transmission-mode… More

Kinetic energy weapons systems such as ground-based exoatmospheric re-entry vehicle interceptors (eris) and space based interceptors (sbi) presently do not use laser guidance and fuzing subsystem. in the high and atmospheric defense interceptor (hedi) unit, a laser is used, however this… More

The homodyne characteristics are being evaluated of a breadboard coherent one micron solid-state laser in a laser radar (ladar) configuration operation against laboratory moving (doppler) targets. this program builds upon previous work that demonstrated coherent beamsummation in which two breadboard… More

Present-day sensors for smart submunitions are limited in their performance against complex backgrounds, adverse weather conditions, and countermeasures. schwartz electro-optics (seo) proposes to improve the target-discrimination effectiveness of smart submunitions by combining an active laser… More

The work proposed here would develop a laser that is critical for space-based combustion experiments: an all-solid-state laser for spectroscopic analysis of combustion and other reactive mixtures. the approach to solving this problem has the distinct advantage of being based on ti:sapphire, a… More

We propose to investigate the use of a cw, frequency doubled, diode-pumped solid state laser in the generation of watt-level blue light, for applications to large-screen projection displays. the specific system to be studied would be a 946-nm nd:yag laser employing an intracavity doubling crystal of… More

A diversion device/incapacitant based on a chemical pump solid state laser to flash-blind an opponent without injuring nearby innocent personnel will be studied in this program. the recent data collected at schwartz electro-optics (seo) indicates the feasibility of a chemical pumped solid state… More

The proposed program involves the construction of a breadboard eye-safe continuously tunable co:mgf2 lidar measurements of vertical concentration profiles of the atmospheric aerosol. the lidar will utilize a new and unique, room temperature, eye-safe co:mgf2 laser commercially sold by schwartz… More

A single-frequency, high-energy, ti:a12o3, lidar transmitter is currently under development for nasa langley research center. this system requires two different types of ti:a12o3 pump laser. the master oscillator requires a cw (or quasi-cw) pump laser with a nominal output of 1-2 w. the… More

We propose a new upconversion pumping scheme called excited state absorption (esa) pumping which can be described as atwo photon resonant pumping process in which the second photon is internally generated (similar to ion-pair interactions in which the energy may be transferred without photon… More

Current high-powered dye lasers, presently available, require large, heavy and cumbersome power supplies. while these lasers may be appropriate in a research setting, they do not lend themselves readily to a mobile envirnoment in which a rugged, compact, tunable laser operating in the visible… More

Technical report rd-as-89-18 developed a new optical configuration for an air-defense or anti-missile proximity fuze which permits a variable field of regard to be used. the sensing field is programable in both shape and pointing angle, controlled by the position and tilt of a multichannel ir laser… More

A high-power, single-frequency laser based on a unique, modular, neodymium (nd) gain-element that is pumped by an array of semiconductor diode lasers will be developed. this device would be capable of driving a compact, multiwatt laser transmitter in a space-based communication system. output powers… More

The air force has expressed an interest in being able to measure the concentration of water vapor, and other gases, in the atmosphere at altitudes between 15 and 90 km. the measurement would be conducted during the descent phase of a small rocket flight. in the phase i of this research effort, we… More

The proposed effort is to analyze, design, and construct an optical range system to be used to sense the presence of any obstacle within a 200 foot radius of the helicopter. while laser rangers have been used by the industrial and military communitites for many years, these designs are for… More

The proposed soldier/crew weapon instrumentation system will provide a non intrusive instrumentation capability that will record the solider/crew interactions and performance for post exercise analysis and critique by an instructor. the soldier/crew instrumentaiton system proposed would record sight… More

Laser-based submarine communications systems have been under investigation for a number of years. one recent systems concept, designed for communications uplinks, involves the use of a frequency-agile, khz-repetition-rate source operating in the water-transmission window. in this proposal we present… More

The proposed effort is to analyze, design, and fabricate a prototype near-ir (800-900 nm) semiconductor laser which will have high radiance and high duty cycle and will meet the requirements of a rail jammer. from work done by seo and others, it has not been conclusively proven whether laser… More

Photodynamic therapy (pdt) utilizing hematoporphyrin derivative (hpd) and a cw argon-pumped dye laser turned to 630 nm has been shown to be a promising treatment for a number of forms of cancer. however, because tissue penetration is maximized for wavelengths greater than 700 nm, substantial effort… More

The army's prime force on force training system (multiple integrated laser engagement system (miles)) operates at .904 microns. this wavelength is limited by eye safety and attenuation by battlefield obscurant considerations. new army weapon systems are designed to operate out to ranges in excess of… More

The treatment of portwine stains, telangiectases and other microvascular malformations of the skin has been greatly improved by laser surgery. between 1981-83, work by anderson and colleagues identified an approach called "selective photothermolysis", which led to effective yet essentailly… More

Corneal sculpting is a new technique that uses an ultraviolet laser to correct refractive vision disorders by ablating a portion of the cornea. current clinical systems use the arf excimer laser operating at 193 nm, which produces sharply defined corneal incisions with minimal damage to adjacent… More

The development of gainasp semiconductor diode lasers for fiber-optic communication systems at 1.55 um has led to consideration of the potential use of these devices in compact, eye-safe laser radar systems. we propose a novel lidar technique that can make efficient use of the novel properties of cw… More

Diagnosis of eye diseases depends critically on imaging of the retina and its supporting vasculature, including the choroidal blood vessels, which must be viewed through the sensory retina. we will determine whether the diagnostic capabilities of one of the newest retinal imaging instruments, the… More

Clear air turbulence (cat), which can contain differential wind velocities of 100's of meters per second, are a severe danger to aircraft which encounter them without warning. we describe an eye-safe lidar system designed to provide 10 seconds of warning to an aircraft traveling at 400 knots. the… More

At present, there is no method for the accurate and reliable verification of the existence of a clear line-of-sight between multiple weapon system platforms and multiple targets. schwartz electro-optics proposes to develop a line-of-sight verification system employing quasi-lambertian optical… More

The imaging performance of ground-based astronomical telescopes is compromised by atmospheric turbulence. there is increased interest in the use of adaptive optics to correct for atmospheric distortion. one general concept for atmospheric compensation involves the use of a so-called artificial guide… More

Because man is learning that the earth's environment is a fragile system, the need for understanding man's effects on this system is greater than ever. an ideal method to obtain valuable information on atmospheric pollutants is through the use of lidar. researchers are using a q-switched ho:yag… More

Precision wavelength standards in the range 500 to 700 nm are required by doe for the uranium-atomic vapor isotope separation (u-avils) program. the development of a diode-laser pumped, solid state laser system is planned to meet the program requirements. it involves intracavity sum frequency mixing… More

The subject of Chaos has been investigated since the turn of the century, it wasn't until the recent advances in Chaos that the importance and scope of the field was realized. It was believed that random Chaotic variations were too complicated to describe mathematically and statistical descriptions… More

Generally, detection and recognition of a target can be made at distances greater than those for positive identification. In an effort to extend the identification. In an effort to extend the identification range, Schwartz Electro-Optics, Inc. (SEO) proposes to develop a concept for Non-Cooperative… More

There are many applications for a tunable coherent 390 nm to 3.5 m source but there are no tunable laser sources and very few discrete laser lines in this region. by using a titanium sapphire laser and frequency doubling there is limited tunability but this approach suffers from poor conversion… More

The proposed effort is to design, analyze, fabricate and test a los cost, application specific LADAR system for weapon guidance. This LADAR system must autonomously detect, locate and classify various ground targets in clutter from a SADARM like platform. Project objectives are to demonstrate that… More

The innovation proposed here is the development of a new,all-solid-state, single-frequency, laser that is tunable in the180- to 210-nm region with application to hypersonic,reactive-flow diagnostics. This wavelength region has not, todate, been acce

We have shown in recent laboratory experiments that the fortuitous nonlinear properties of potassium titanyl phosphate (KTP), exploited in innovative optical pararnetric oscillator (OPO) designs, can provide an eyesafe laser source that is unusually simple, compact, efficient and reliable. In… More

In this effort, we propose a CW, optical parametric oscillator (OP), whose emission falls within the 3.9 to 4.1 micrometer or the 4.4 to 5.0 micrometer wavelength band. The proposed systems will be based upon the nonlinear materials CdSe and/or KTiOAsO4 (KTA), or ZnGeP2 and will be designed to… More

We propose to develop an optical line-of-sight communication and tracking link to enable secure voice and data transfer between aircraft and ship during landing approach. The system will be based on an existing compact, diode-pumped, Tm,Ho:YLF laser (mounted on the carrier) and a extremely compact… More

Schwartz Electro-Optics, Inc. (SEO) proposes a Phase I study program for a Q-switched solid state laser suitable for advanced warhead" applications. It is recognized by the Navy and SEO that most existing laser technology using active Q-switches (electro-optics, acousto-optics, rotating mirror… More

Coherent laser radar has proven its utility in measuring wind velocity fields up to the stratosphere, detecting wind shear, mapping wake vortices, and tracking air pollutants, yet it remains a diagnostic firmly rooted in the laboratory. The full potential of this technology will not be realized… More

The proposed effort uses a combination of diode-pumped solid state lasers and optical parametric oscillators (OPOs) to generate a range of wavelengths in the mid-IR, from 1.5 to 5 microns. A modular system design involves several optical modules for generation of wavelengths in three different… More

Recent advances in ultrafast, solid-state, near-infrared laser sources have led to the developmentlaser-based techniques in scientific instrumentation, including demonstrations of high-resolution, tof biophysical specimens using two photonexcitation fluorescence (TPF) laser scanning microscopy.… More

We propose to develop a frequency-agile, range-imaging, LADAR system by innovatively combining a number of new subsystem technologies. This technology would provide the basis for a new class of frequency-agile military range-imaging systems. The proposed system would be comprised of a rapidly… More

This Phase I proposal provides an innovative concept for an Eye Safe-Laser Seeker and Designator (ES-LSD) suitable for implementation to a high G launched projectile. The concept proposed operates equally for spinning or non-spinning projectiles. The uniqueness of this concept is vested to the… More

This proposal is part of a TRP whose aim is the development and commercialization of a generic 2 micrometers coherent lidar transceiver with a variety of airborne wind sensing applications in both commercial and military avionics. These include: flight-level-optimization, clear-air turbulence… More

We propose to develop an infrared source for differential absorption lidar (DIAL) sensing of chemicals in the atmosphere. the source will be based on the use of optical parametric oscillators (OPOs) and will generate wavelengths in the 2-9 micron region of the infrared spectrum. Our source will… More

There are no single-frequency laser devices yet available that continuously cover the 1400 nm to 1700 nm wavelength range. If such a device was developed, it could be used for several applications in telecommunications, LIDAR, and spectroscopy. One of these applications could be OPO seeding. To… More

We propose to begin development of a new class of surgical lasers made possible by recent advances in high power, semiconductor-laser technology. Multi-Watt level, diode-pumped, mid-infrared solid state lasers will eventually replaced lamp-pumped systems for many surgical applications. The compact… More

The proposed program represents a thorough identification and analysis of all the factors that define an airborne system for determination of slant range. The combined experience in military, industrial, scientific, medical, and commercial laser capabilities of the Schwartz Electro-Optics team… More

Cerebral artery vasospasm may occur in patients suffering from subarachnoid hemorrhage and can resuneurological damage. The number of patients suffering from cerebral vasospasm is in excess of 20,000often produces permanently crippling effects or death in the 30-40 year old age group that… More

We propose to begin development of a new class of surgical lasers made possible by recent advances in high power, semiconductor-laser technology. Multi-Watt level, diode-pumped, mid-infrared solid state lasers will eventually replaced lamp-pumped systems for many surgical applications. The compact… More

The proposed program represents a thorough identification and analysis of all the factors that define an airborne system for determination of slant range. The combined experience in military, industrial, scientific, medical, and commercial laser capabilities of the Schwartz Electro-Optics team… More

Schwartz Electro-Optics, Inc. (SEO) is pleased to propose a Phase I study program for Laser Initiated Explosives (LIE) with Center for Research and Education in Optics and Lasers (CREOL) associated with the University of Central Florida. It is recognized by the Navy that the unexploded … More

Diode-pumped solid-state lasers are often described as being and efficient en the power supplies and cooling apparatus are included, they are not nearly as compact and efficient as many applications require. The objective of this… More

The key element in realizing compact and rugged laser projectors is an efficient and reliable, diode-pumped solid-state RGB laser source. In this work, we proposed to develop an efficient diode-pumped RGB laser source based on a green-pumped OPO. The OPO signal wavelength is around 940 nm and the… More