Award Data

Presently there are no broadly tenable, narrow linewidth souces that operate throughout the mid-infrared (mid-IR) region of the spectrum, from 1 to 5 microns. Traditional sources have very low spectral brightness (low power per unit spectral bandwidth). This proposal describes a novel approach to produce a source with very high spectral brightness, tunable over the range of 1.1 to 4.3 microns. ...

The high cost of near-to-mid infrared laser sources is problematic for many military applications, such as seekers where sources are short lived. Order-of-magnitude cost reductions are needed for 10-20 watt, 1-micron lasers. The proposed approach to reducing costs involves using novel manufacturing processes to greatly reduce parts count and assembly time, thus reducing cost. When applied to a ...

With new detectors capable of sensing 7.5 - 9 micron wavelengths, a future threat is emerging since these detectors can be used in seekers. The need is to counter this threat with a laser source operating at 7.5 - 9 microns. The source requirements are 5 - 10 Watts of average power and a repetition rate of > 10 kHz. The proposed laser source is a Nd:YAG-pumped tandem OPO system consisting o ...

115 Compact, Low-Cost Tunable Laser Source for Remote Chemical Sensing--Aculight Corporation, 40 Lake Bellevue, Suite 100, Bellevue, WA 98005-2480; (206) 451-9558 Dr. Mark S. Bowers, Principal Investigator Mr. Charles I. Miyake, Business Official DOE Grant No. DE-FG03-97ER82308 Amount: $75,000 Advanced laser sources are sought by the Department of Energy for remote sensing of gases and other ...

The Air Force Phillips Laboratory is seeking approaches for demonstrating frequency agile COIL (chemical oxygen iodine lasers) operating near 1.31 microns and at 10 kHz rep rates. Frequency conversion approaches must be capable of handling high average power levels, greater than 10 kWatts. Converting a COIL device to high peak powers will be necessary for frequency conversion. The approach prop ...

For future long-range theater ballistic missile defense, aircraft-mounted LADAR systems require eyesafe laser transmitters that produce higher pulse energy and better beam quality than currently available optical parametric oscillators (OPOs) pumped by diode-pumped Nd:YAG lasers. Aculight proposes a novel laser transmitter approach that can simultaneously generate the required pulse energy, b ...

The nuclear weapons community has traditionally focused on the next generation or level of weapon capability complimented by gathering and analysis of actual test data. Now, with the cessation of actual weapons testing, there is an increased need to use the actual test data in modeling techniques to better understand the phenomenology and potential effects of nuclear weapons. The first phase of ...

Recent efforts in the target vulnerability community (fixed ground targets, mobile ground targets, and aircraft) have focused on enhancing the blast and fragmentation modeling from weapon detonations. This includes modeling propagation of the detonation effects from the weapon through their interaction with the target geometry, to the development of loads on and response of the target structure. ...

Warhead design calculations and weapons effectiveness estimates require a methodology to predict structural response and the associated damage to air targets from reactive munitions. The objectives for the proposed Phase I study effort are to develop candidate launch conditioning, reaction initiation and reaction rate methodology, to incorporate existing ballistic, blast and quasi-static pres ...

Turbulence of gas flows by its very nature is one of the most difficult things to model and measure. We propose to develop a new way of measuring the turbulence and to compare these measurements to predictions using the k-epsilon model. Typical measurements, in the past, use smoke, Schlierin or shadow graph techniques to visually infer turbulence characteristics. These features are either motio ...