Spectrum Detector, Inc. selected as subcontractor by RadiaBeam Technologies of Marina Del Rey, California.

Don Dooley, President of Spectrum Detector has agreed to develop a custom Linear Pyroelectric Detector Array for a phase II DOE SBIR Contract being pursued by Dr. Gerard Andonian and associates of RadiaBeam Technologies, Inc.

Lake Oswego, Oregon, April 22, 2008 - Spectrum Detector, Inc., a leading manufacturer of pyroelectric detectors, electronics and instruments for Optical and THz Measurements has been selected by RadiaBeam to help develop a multi-element Linear Pyroelectric Array as part of a phase II SBIR entitled "Development of a Real Time Interferometer for Single-shot, Non-destructive, Longitudinal Diagnostics". The array will have sub-nanojoule pulse energy resolution in the 0.2 to 3 THz portion of the electromagnetic spectrum. The array will be an integral part of a "Auto-correlating interferometer for ultra-fast electron beam diagnostics".

"RadiaBeam Technologies is an advanced R&D company which serves the technical and diagnostic needs of Accelerator Facilities worldwide" - according to Dr. Andonian.

This new device will address the issue of obtaining real-time, longitudinal bunch length information of relativistic beams at accelerator R&D facilities, 4th generation light sources and next generation colliders.

About Spectrum Detector.

Spectrum Detector, Inc., is a leading manufacturer of standard and custom detectors, electronics and instruments for measuring optical power and energy. The company offers a wide range of advanced solutions including LiTaO3 pyroelectric detectors, broadband pyroelectric radiometers, silicon, germanium power sensors, pyroelectric and silicon joulemeters, optical TRAP detectors and THz products. The company excels at providing custom engineered detectors and instruments, NIST traceable calibration in watts and joules and responsive technical support. For more information, contact Spectrum Detector, Inc., 5825 Jean Road Center, Lake Oswego, OR 97035, dond@spectrumdetector.com, (503) 697-1870. Web:www.spectrumdetector.com