FM characteristics and compact modules for coherent semiconductor lasers coupled to an external cavity

Journal Article · Wed Feb 28 23:00:00 EST 1990 · IEEE Photonics Technology Letters (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/68.50878· OSTI ID:6972620

Shin, C H; Teshima, M; Ohtsu, M ^[1]; Imai, T; Yoshida, J; Nishide, K ^[2]

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1. Tokyo Inst. of Tech., Yokohama (Japan)
2. Tokyo Aircraft Instrument Company, Ltd., 35-1, Izumi-Honcho, 1-Chome, Komae-shi, Tokyo 201 (JP)

FM responses of a semiconductor laser optically coupled off-axis to a confocal Fabry--Perot cavity were measured. It is reported that this cavity acted as a frequency discriminator and as a phase comparator for slow and fast frequency fluctuations, respectively. The crossover between them was determined by a half linewidth of the cavity. Based on these investigations, we made two kinds of coherent semiconductor laser modules. External FP cavities were made by using an optical fiber and a hemispherical micro-lens, respectively. Linewidths of these lasers were less than 25 kHz.

• OSTI ID: 6972620
• Journal Information: IEEE Photonics Technology Letters (Institute of Electrical and Electronics Engineers); (USA), Journal Name: IEEE Photonics Technology Letters (Institute of Electrical and Electronics Engineers); (USA) Vol. 2:3; ISSN IPTLE; ISSN 1041-1135
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
440600 -- Optical Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
COUPLING
FABRY-PEROT INTERFEROMETER
FIBERS
FREQUENCY MODULATION
INTERFEROMETERS
LASER CAVITIES
LASERS
LINE WIDTHS
MEASURING INSTRUMENTS
MODULATION
OPTICAL FIBERS
OPTICAL SYSTEMS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLID STATE LASERS