Abstract

The effects of tilt and offset on the heterodyne efficiency are discussed for optical fields with Gaussian field distributions. An aperture is used in the input plane of the system to decrease the background noise which is incident on the signal. The numerical results show that in optimum conditions of the system and beam fields, the tilt must be less than ~10⁻⁴ deg and the offset about one-fifth of the input aperture to obtain more than 60% of the ideal values of the efficiency.

© 1987 Optical Society of America

Heterodyne detection by using a diffraction-free beam: tilt and offset effects

Khan M. Iftekharuddin and Mohammad A. Karim
Appl. Opt. 31(23) 4853-4856 (1992)

Maximum heterodyne efficiency of optical heterodyne detection in the presence of background radiation

Kazumasa Tanaka and Nobuhiro Saga
Appl. Opt. 23(21) 3901-3904 (1984)

Signal-to-noise ratio in optical heterodyne detection for Gaussian fields

Takashi Takenaka, Kazumasa Tanaka, and Otozo Fukumitsu
Appl. Opt. 17(21) 3466-3471 (1978)

Heterodyne efficiency for a partially coherent optical signal

Toshiyuki Tanaka, Mitsuo Taguchi, and Kazumasa Tanaka
Appl. Opt. 31(25) 5391-5394 (1992)

Heterodyne detection using a diffraction-free beam: background-noise effects

Khan M. Iftekharuddin and Mohammad A. Karim
Appl. Opt. 32(17) 3144-3148 (1993)