Three to Five Micron VET Laser Investigation
Final rept. 2 Jan-31 Dec 1975
UNITED TECHNOLOGIES RESEARCH CENTER EAST HARTFORD CT
Pagination or Media Count:
The objective of this investigation is to develop and demonstrate the technology necessary to design a practical airborne molecular vibration- vibration energy transfer laser operating in the 3 to 5 micrometers spectral range with an output of 10-100 watts. The deuterium-donorhydrogen chloride- acceptor system has been selected as the most promising transfer system in the given spectral region. Spectroscopic measurements have been made in flowing HCl vibrationally excited by transfer from deuterium excited in a self-sustained dc electric discharge. The medium is characterized by a vibrational temperature, which is T sub V 1440-1960 K and rotational temperature, which is T sub V 240-325 K immediately after mixing and transfer. Donor gas excitation determined by Raman scattering in the hydrogen isotope corresponds to T sub V 900-1350 K. Calorimetric measurements of electric discharge heat losses have confirmed the relatively low level of discharge vibrational excitation. Attempts to determine post discharge dissociation have been negative.
- Lasers and Masers