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385. mu. mD/sub 2/O laser line width measurements to - 60dB

Journal Article · · IEEE J. Quant. Electron.; (United States)
First linewidth measurements over a 60 dB dynamic range of a pulsed, high-power, optically pumped far infrared laser are presented. These measurements were made possible by using a 385 ..mu..mD/sub 2/O laser with an N/sub 2/O absorption filter and a sensitive heterodyne receiver. Studying a 385 ..mu..mD/sub 2/O laser oscillator we find that the low-level linewidth (less than or equal to -20 dB) can be explained by the ac Stark effect due to the high-power pump field. Also, the authors have not observed any frequency pulling of the main Raman emission frequency due to the strong pump and FIR laser fields.
Research Organization:
Plasma Fusion Ctr, Massachusetts Instit. of Tech, Cambridge, MA 02139
DOE Contract Number:
AC02-78ET51013
OSTI ID:
6159983
Journal Information:
IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. 19:1; ISSN IEJQA
Country of Publication:
United States
Language:
English