USA As Represented by Secretary of the Navy

Dhpc Technologies, Inc.

Bruce P Boczar

Yei Wo

Joseph M Aletta

Richard Gifford

A system, method, and device for evaluating the intensity profile of a laser beam. The laser detection system has a target surface with an interior and an exterior. The target surface and a housing create a target pod with an enclosed interior chamber. A beacon is provided at the target pod to provide for targeting. A camera is provided that images the interior of the target surface from within the enclosed interior chamber. Some percentage of the intensity of the laser beam passes through the target surface uniformly and illuminates the interior of the target surface when the laser beam strikes the target surface. The illumination of and subsequent scattering from the interior of the target surface is imaged by the camera for analysis. By detecting the laser intensity as a function of position, the intensity profile of the laser beam can be quantified.

System, method and device for evaluating the intensity profile of a laser beam

A system, method, and device for simulating an emission signature, which contains representative intensity, temporal, and spectral emission profiles of a weapon system or weapon platform for the purpose of testing an optical detection device. A projection system optically projects the emission signature. A projection screen is provided that has a concave curvature. The concave curvature possesses a first focal point and a second focal point. Any light emanating from the second focal toward the projection screen is reflected by the projection screen toward the first focal point. The projection system is positioned at the second focal point and the optical detection system is positioned at the first focal point. In this manner, the emission signature projected by the projector system is redirected to the optical detection system.

System, method and device for a high fidelity electro-optical simulator

The present invention is a method and system for performing optical filteg. Light energy in one frequency band is received in this system. The received light energy is filtered in one frequency band in order to provide filtered light which is applied to a nonlinear optical device. The nonlinear optical device provides frequency conversion preferably by forming a sum frequency or difference frequency. The frequency converted light energy is in a second frequency band. The energy in this second frequency band is applied to a further filter in a different frequency band wherein the two filter frequency bands are selected to prevent light energy from passing through both filters. The received light energy may contain information which is recoverable from the light energy which passes through the second filter. The nonlinear device is a crystal in which the index of refraction may be changed in order to tune the filter.

Nonlinear frequency conversion optical filter

In the present invention a nonlinear crystal of an optical parametric oscator is provided with a pump pulse and electrodes for applying a high voltage to the crystal during the pump pulse. The high voltage is switched from one level to another during the pump pulse duration. The initial value of the high voltage determines the position of the frequency center of the optical parametric oscillator gain profile because the indices of refraction are a function of the applied voltage due to the electro-optic effect. During the pump pulse, when the high voltage is switched to some other value, a new set of momentum and energy conservation conditions results. This causes a frequency shift in the gain profile. Thus the oscillator is provided with two differing gain profiles during the pump pulse. The output frequency of the oscillator is only those frequencies in both gain profiles.

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Trevose, PA, United States of America

Bruce P Boczar