Noise and longitudinal mode characteristics of (Ga AL) As TS lasers with reduced facet reflectivities

Journal Article · Mon Feb 28 23:00:00 EST 1983 · IEEE J. Quant. Electron.; (United States)

DOI:https://doi.org/10.1109/JQE.1983.1071858· OSTI ID:5831473

Shimizu, H; Itoh, K; Sugino, T; Teramoto, I; Wada, M

The AM noise in operation of index-guided (GaAL)As lasers is found to be strikingly reduced by the antireflection (AR) coating of cavity facets. This effect is shown to result from the longitudinal multimode operation due to the reduced facet reflectivity. It is observed that the width of the envelope of a laser spectrum depends on the facet reflectivity as well as the laser output power. The AM noise in the low-frequency range of the reduced reflectivity lasers is shown to be nearly constant with respect to temperature change. In contrast, the AM noise in a laser without the AR facet coating is characterized by a number of spikes occurring over a wide temperature range.

• Research Organization: Semiconductor Lab, Matsushita Electronics Corp, Takatsuki Osaka
• OSTI ID: 5831473
• Journal Information: IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. 19:3; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ALUMINIUM ARSENIDES
ALUMINIUM COMPOUNDS
ANTIREFLECTION COATINGS
ARSENIC COMPOUNDS
ARSENIDES
COATINGS
FREQUENCY RANGE
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
GAS LASERS
LASER CAVITIES
LASERS
LINEAR MOMENTUM
LONGITUDINAL MOMENTUM
NOISE
OPERATION
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PNICTIDES
REFLECTIVITY
SPECTRA
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE