High Speed MWIR Laser Attenuator

Physical Sciences Inc. (PSI) has been awarded a contract from the U.S. Air Force to develop a High Speed Mid-wavelength infrared (MWIR) Laser Attenuator that will improve the capability of missile plume signature simulation tools.

PSI, in collaboration with Boston Applied Technologies Inc. (BATi), is developing and characterizing an Electro-Optical (EO) polarizer module that will form the basis for the attenuator assembly. The EO polarizer module will increase the full depth modulation by a factor greater than four compared to the current attenuator used in the towed optical plume simulator (TOPS) emitter. Successful completion of this work will lead to an innovative advancement in the control of the MWIR irradiance from missile signature simulation tools and advance countermeasure systems.

This effort will provide the Air Force with an advanced, compact and reliable MWIR attenuator that will significantly advance the IR band irradiance control of existing mobile missile signature simulations tools, such as MSALTS, and advanced systems currently under development, such as the TOPS. The attenuator assembly will consist of electronically controlled, cascaded EO attenuators designed to meet specific temporal radiant intensity requirements. In addition, the novel attenuator may also find applications in the areas of ultrafast phase modulated 3D imaging, LIght Detection and Ranging (LIDAR) and telecommunications.

For more information, contact:

Dr. David Oakes
Group Leader, Aero Thermal Signatures
Physical Sciences Inc.
Telephone: (978) 689-0003