UV Spectroradiometer for National Institute of Standards and Technology

A COMBINED SOURCES SOUGHT NOTICE AND NOTICE OF INTENT TO SOLE SOURCE Announcement Number: NIST-SS26-77 Subject: Notice of Intent to Noncompetitively Acquire AF UV spectroradiometer This notice is not a request for a quotation. A solicitation document will not be issued, and quotations will not be requested. This acquisition is being conducted under the authority of FAR 13.106-1(b) via FAR 13.106-1(b). The North American Industry System (NAICS) code for this acquisition is 334516, Analytical Laboratory Instrument Manufacturing.

BACKGROUND The semiconductor supply chain is global, specialized, and interconnected. Chipmakers do business with NIST is fulfilling a project with the Air Force (F4FTML5267G001) to characterize and calibrate a new transfer-standard spectroradiometer for disseminating the spectral irradiance scale realized at SURF transferred to deuterium lamps. These spectroradiometer are required to have dual sensors, one for its spectroradiometer and the other for its broadband radiometer. The acquisition is for two dualsensor spectroradiometers with a back-thinned, cooled CCD array detector for its spectroradiometer and a photodiode for its temperature-controller radiometer. NIST requires a spectroradiometer with the following capabilities: (1) a minimum spectral range from 190 nm to 430 nm and a bandpass no larger than 1 nm, and (2) dual-sensor design (a thermoelectric cooled back-thinned CCD array detector with at least 2048 pixels and a photodiode detector with a temperature-controlled radiometric filter). It is critical to meet these

requirements to have the capabilities to disseminate the spectral irradiance scale realized at SURF transferred to deuterium lamps at the lowest possible uncertainty for the Air Force. A bandpass <1 nm is required over the required range to eliminate the need for corrections to data. A narrow bandwidth resolves all the features in the spectrum instead of spreading the energy over several wavelengths. A dual sensor device is required for stability over time. The photodiode is very stable over time but cannot resolve the optical radiation with respect to wavelength like the CCD array. Combining both in one device creates a capable device that is stable over time. This manufacturer is the only one found that creates such a device. A one-year long research project funded by the US Air Force allowed NIST researchers to investigate the market comparing more than 5 manufacturers in this area. Based on the market research, no other vendor offers a similar product that meets these

requirements. A prototype product is not acceptable. Multiple companies were found through market research that provide dual-sense spectroradiometers; however, only Gigahertz-Optik was capable of meeting all of NIST’s minimum

requirements. The minimum specifications regarding these items are listed below. Line Item 0001: Spectroradiometer Quantity: 1 Technical Specifications One (1) spectroradiometer with a minimum spectral range from 190 nm to 430 nm and a bandpass no larger than 1 nm. Calibrated between 200 nm and 430 nm. Dual-sensor design: a thermoelectric cooled back-thinned CCD array detector with at least 2048 pixels and a silicon photodiode detector with a temperature-controlled radiometric filter. 16-bit analog to digital converter for the CCD array detector. Stray light: 0.02 % or lower, plus software stray-light correction. Input optic: on-housing irradiance probe (without using an optical fiber) with a cosine angular response quality index f2 no greater than 3 %. Compact, weather-proof, temperature stabilized housing with dimension no larger than 110 mm x 110 mm x 55 mm (Length x Width x Height). Built-in optical filter wheel with at least 2 positions Electronic shutter with the minimum integration time from 2 microseconds to 60 seconds. Pre-aged components for stability over time. Hardware trigger input port Communication interfaces: USB, Ethernet, RS232, and RS485. Software

requirements: LabVIEW support, bandpass correction support, raw data support. NIST conducted market research from December 2025 – February 2026 by conducting online searches, discussions with sources, and discussions with colleagues to determine what sources could meet NIST’s minimum