Abstract

Wave-front matching of the local oscillator beam and the signal beam is of vital importance in optical heterodyne efficiency. A method for aligning the local oscillator beam and the signal beam is described. Mixing efficiency is improved. One can directly observe the matching procedure on an oscilloscope.

© 1992 Optical Society of America

Measured signal amplitude distributions for a coherent FM-cw CO₂ laser radar

Dietmar Letalick, Ingmar Renhorn, and Ove Steinvall
Appl. Opt. 25(21) 3927-3938 (1986)

Coherent laser radar performance for general atmospheric refractive turbulence

Rod G. Frehlich and Michael J. Kavaya
Appl. Opt. 30(36) 5325-5352 (1991)

Signal-to-noise-ratio equations for a heterodyne laser radar

Charles A. DiMarzio and Scott C. Lindberg
Appl. Opt. 31(21) 4240-4246 (1992)

Imaging Q-switched CO₂ laser radar with heterodyne detection: design and evaluation

Henrik Ahlberg, Stefan Lundqvist, Dietmar Letalick, Ingmar Renhorn, and Ove Steinvall
Appl. Opt. 25(17) 2891-2898 (1986)

Detection efficiency of coherent optical radar

Jon Y. Wang
Appl. Opt. 23(19) 3421-3427 (1984)