Stark effects in optically pumped CH/sub 3/OH far infrared laser

Journal Article · Tue May 01 04:00:00 EDT 1979 · Appl. Opt.; (United States)

DOI:https://doi.org/10.1364/AO.18.001314· OSTI ID:6293083

Koo, K P; Claspy, P C

The Stark tuning properties of the 118.8-..mu..m CH/sub 3/OH FIR laser line pumped by the P (36) 9.4-..mu..m CO/sub 2/ laser line are investigated. A laser model using a rate equation approach is derived. Observed Stark tuning effects include (1) frequency shifting of CH/sub 3/OH absorption line, (2) frequency shifting of the FIR laser line, and (3) amplitude modulation of the FIR laser output. Frequency shifting of the CH/sub 3/OH absorption line closer to the CO/sub 2/ pump laser line center results in a Stark enhancement of the 118.8-..mu..m FIR laser line by a factor of 3 with a Stark field of 180 V/cm. Frequency shifting of about 7 MHz of the 118.8-..mu..m FIR laser line is observed with a Stark field of 362 V/cm. Amplitude modulation characteristics of the FIR laser output are observed to be similar to those for Stark absorption modulation.

• Research Organization: Case Western Reserve University, Electrical Engineering Applied Physics Department, Cleveland, Ohio 44106
• OSTI ID: 6293083
• Journal Information: Appl. Opt.; (United States), Journal Name: Appl. Opt.; (United States) Vol. 18:9; ISSN APOPA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ALKYL RADICALS
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
FAR INFRARED RADIATION
GAS LASERS
HYDROGEN COMPOUNDS
HYDROXIDES
INFRARED RADIATION
LASERS
METHYL RADICALS
MODULATION
OPTICAL PUMPING
OXYGEN COMPOUNDS
RADIATIONS
RADICALS
SPECTRAL SHIFT
STARK EFFECT
TUNING