NASA/Goddard Space Flight Center, Code 219, Greenbelt, MD 20771

66 -- TEMPERATURE TUNABLE SINGLE AIR-GAPPED ETALON AND TEMPERATURE INSENSITIVE SINGLE AIR-GAPPED ETALON SOL 924-78233-902 DUE 071598 POC Deborah A. Bittner, Contract Specialist, Phone (301) 286-5387, Fax (301) 286-1739, Email Deborah.A.Bittner.1@gsfc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/GSFC/date.html#924-78233-902. E-MAIL: Deborah A. Bittner, Deborah.A.Bittner.1@gsfc.nasa.gov. NASA/GSFC plans to issue a Request for Quote (RFQ) for two (2) each Temperature Tunable Single Air-Gapped Etalons with temperature sensitive spacers and two (2) each Temperature Insensitive Single Air-Gapped Etalons with temperature insensitive spacers. All etalons shall meet the following specifications: ussable clear aperature: 35mm; center wavelength (normal incidence): 532.213 nm +/-0.005 nm (vacuum wavelength); free spectral range: >400 pm; transmission at center wavelength (when illuminated with a 35 mm diameter collimated beam): >90%; etalon mount maximum diameter: 60 nm. Specific specifications for etalon #1 (tunable air-gapped): fwhm bandwidth:25 pm +/-3 pm; temperature tuning rateL 30 pm/c; center wavelength at 35c. Specific specifications for etalon #2 (insensitive air-gapped): fwhm bandwidth: 70 om +/- 5 pm; change in etalon wavelength with temp. must be less than 0.04 pm/k; center wavelength at 25c. The etalons must be low weight (less than 600 grams) and rugged (meet MIL-STD-883, method 2007, Condition A) to meet the space flight and 3 year life time requirements of the Geoscience Laser Altimeter System (GLAS) mission. The etalon cannot require capacitive sensors to insure the etalon spacing and plate parallelism is maintained, but rather must achieve parallelism and controlled gap spacing via precision mechanical engineering and rugged construction. Temperature tuned etalons provide the simplest solution to the narrow band filter requiremennts of the GLAS mission which only require a slow tuning rate (20 pm/hour) to track slow drift in the laser wavelength. Traditional piezo-electric tuned etalon filters are larger, heavier, and require a much more complicated control system. This procurement is being conducted under the Simplified Acquisition Procedures (SAP). The Government intends to acquire a commercial item using FAR PART 12. The SIC Code and Size Standard are 3829 and 500, respectively. The DPAS Rating for this procurment is DO-C9. The anticipated release date of RFQ 924-78233 ison or about June 23, 1998, with an anticipated quote due date of on or about July 15, 1998. All qualified responsible sources may submit a quote which shall be considered by the agency. Requests for the RFQ package must be in writing or by Fax, no phone calls. An ombudsman has been appointed -- See Internet Note "B". Prospective offerors shall notify this office of their intent to submit an offer. It is the offeror's responsibility to monitor this site for the release of the solicitation and amendments (if any). Potential quoters will be responsible for downloading their own copy of the solicitation and amendments (if any). Any referenced notes can be viewed at the following URL: http://genesis.gsfc.nasa.gov/nnotes.htm. (0162)

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