Brimrose Corp. of America

Sparks, MD—The Brimrose Technology Corporation is pleased to announce that our new, Cadmium Magnesium Telluride (CMT)-based, ultra-fast X-ray/Optical laser photodetectors are now available for sampling. The photodetectors can provide coarse timing in x-ray free electron lasers (XFEL), synchrotrons and for numerous other applications. The new photodetectors are the result of extensive research and development from our team of scientists, enabled in large part by an SBIR provided by the U.S. Department of Energy (DOE), which is now in its second phase. A central goal is to find a replacement for the Hamamatsu G4176-03 ultra-fast, GaAs-based MSM photodetector, which has been discontinued. This new picosecond photodetector is based on our proprietary, in-house grown CMT material, which can exhibit better detector performance while having a similar form factor to the Hamamatsu detector. Our new photodetector is also available in sensor form and can also be flexibly designed and assembled in other forms and various sensor sizes that are suitable for customers’ needs. Brimrose’s CMT-ultrafast detector benefits all applications that rely on ultrafast timing of free electron lasers, such as femtosecond X-ray/optical cross-correlation diagnostics, especially in biology, chemistry and materials science. Examples of usages in synchrotron radiation applications include printing nanochip patterns, soft x-ray microscopy and protein crystallography. Other potential applications of Brimrose’s CMT include radiation detection and THz applications.

Brimrose introduces new series of AOTF-based polarimetric hyperspectral imager (HSI) that offers significantly a larger amount of wavelengths (a few hundred) can be measured. When incorporated with waveplate/retarders, the imager system can be easily configured to measure all six polarization states needed for Stokes vector measurement on each pixel. The instrument can be used to develop ground based, airborne, or space-flight instrument with similar configurations, without pushbroom scan. The AOTF device is controlled electronically, which provides correct acoustic frequency driving the transducer as RF frequencies. AOTF HSI have several advantages over traditional pushbroom HSI. Traditional HSI require careful handling and frequent calibration. They also suffer lower scan speed and lower reliability. An AOTF is an all solid-state tunable filter with no moving parts and is therefore immune to orientation changes or even severe mechanical shock and vibrations. Moreover, the AOTF is a high throughput and high-speed programmable device capable of accessing wavelengths at rates up to 16 kHz, making it an excellent tool for in-situ spectroscopy. Some of the key advantages of the AOTF HSI technology are summarized below: • Polarization Selection – AOTF can be used as analyzer for linear polarized light. • Fast speed. up to 16,000 wavelengths per sec • High optical throughput efficiency. As a result of a high diffraction efficiency (up to 90%). • Large field of view (FOV) angle up to ~ 13 degrees • Increasing reliability and ruggedness. As a result of the AOTF being a compact solid-state device (typically 1 to 5 cm3) without any mechanical moving parts, it is insensitive to mechanical vibration and shock, and can be battery powered. Temperature change induced shift of wavelength can be virtually eliminated by adjusting the acoustic frequency accordingly, and thus can operate over extreme temperature ranges.

We are excited to announce the development of a cutting-edge Remote Laser Induced Breakdown Spectroscopy (LIBS) + Laser Induced Thermal Emission (LITE) Detection System. This innovative technology is designed for in-situ detection and identification of trace explosives and hazardous compounds, including chemical warfare agents and toxic industrial materials on operational surfaces. It addresses the critical need for rapid, non-contact remote sensing of chemicals deposited on surfaces, which is vital for the defense and homeland security of the U.S. The integrated LIBS + LITE optical sensing instrument combines the advanced capabilities of UV-Visible-NIR (UV/Vis/NIR) LIBS with mid-Infrared (mid-IR) LITE spectroscopy. This novel system provides comprehensive standoff detection of chemical compounds for in-situ reconnaissance and surface contamination mapping and identification. The instrument is designed to be carried by an Unmanned Aerial System (UAS), synchronizing the flight path with the vehicle-based excitation laser beam. LITE represents a groundbreaking advancement in mid-IR emission spectroscopy, offering rapid, in-situ, and standoff chemical characterization without the need for sample preparation. When combined with the multi-elemental analysis capabilities of UV/Vis/NIR LIBS emission, this system emerges as a rapid, comprehensive, and in-situ analytical tool. It delivers sub-millisecond analysis with high specificity and sensitivity from a standoff distance, distinguishing hazardous surface contaminants such as Chemical Warfare Agent (CWA) simulants DMMP and Malathion from various background signals. The potential detection limit of this optical technology ranges from 0.6-6 g/m2 and 100-1000 ppm. The integrated LIBS + LITE instrument is designed with a simple and robust scheme, ensuring a small Size, Weight, and Power consumption (SWaP) to meet the stringent requirements of UAS operations. The compact form factor (18 × 10 × 10 cm³) with an estimated weight of 3.7 pounds makes it an ideal tool for significant reconnaissance efforts in homeland security and defense against terrorism.