Development of tunable semiconductor lasers for application to air pollution measurements. Final report

Technical Report · Tue Jan 01 04:00:00 EST 1974

OSTI ID:7355229

Mooradian, A; Pine, A S; Ralston, R W

Progress made in developing tunable semiconductor lasers for application to air pollution monitoring is summarized. The researchers report achieving tunability in the near- and mid-infrared with Doppler-limited spectral resolution using pressure-tuned GaAs and PbSSe diodes at 77/sup 0/K. A stable and compact pressure tuning system was developed and used in the experiments that were conducted. Detailed accounts are provided on: (1) pressure-tuning of semiconductor lasers; (2) laser diode fabrication and performance; and (3) external cavity control of diode lasers. The researchers found that operation of a GaAs diode laser in an external cavity with a grating can provide significant improvement over other common laser cavity configurations. With improvements which appear possible in the tuning range and in diode output power, the device could prove particularly useful for multichannel optical communications, absorption, and/or Raman spectroscopy or other experiments.

• Research Organization: Massachusetts Inst. of Tech., Lexington (USA). Lincoln Lab.
• OSTI ID: 7355229
• Report Number(s): PB-241030
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
500100 -- Environment
Atmospheric-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
ARSENIC COMPOUNDS
ARSENIDES
DESIGN
FABRICATION
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
LASERS
MEASURING INSTRUMENTS
PERFORMANCE
PNICTIDES
POLLUTION
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
TUNING