External-cavity semiconductor laser with focusing grating mirror

Journal Article · Mon Oct 01 00:00:00 EDT 1990 · IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (USA)

OSTI ID:5771733

Asakura, H; Hori, Y; Sogawa, F; Kato, M; Serizawa, H ^[1]

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1. Semiconductor Research Center, Matushita Electric Industrial Co., Ltd., Moriguchi, Osaka 570 (JP)

An external-cavity semiconductor laser with a focusing grating mirror (FGM), which enables a single-mode oscillation at a specified wavelength, is proposed. The optical properties of the FGM, which is a computer-generated holographic grating with chirp and bend structure, are numerically analyzed. The FGM is found to serve the functions of an optical feedback grating mirror, a focusing lens, and a narrow bandwidth wavelength filter, and its applicability towards a lensless external-cavity laser is clarified. An optimally-designed FGM for realizing laser oscillation at a specific wavelength of 1.30 {mu}m is fabricated by using a computer-controlled electron-beam writing system. The fabricated FGM with grating area of 1 {times} 1 mm{sup 2} is combined as an external feedback mirror with an InGaAsP-InP semiconductor laser of 1.3 {mu}m wavelength range, and the lasing characteristics are experimentally measured. Stable and single-mode oscillations with spectral line width less than 10 MHz, side-mode suppression ratio of 30 dB, and without low- and high-frequency intensity noise have been successfully realized at nearly the specifically designed wavelength.

• OSTI ID: 5771733
• Journal Information: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (USA), Vol. 26:10; ISSN 0018-9197
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
SEMICONDUCTOR LASERS
MIRRORS
ARSENIC COMPOUNDS
COMPUTERS
FABRICATION
FEEDBACK
FOCUSING
GALLIUM COMPOUNDS
GRATINGS
HOLOGRAPHY
INDIUM COMPOUNDS
LASER CAVITIES
MONOCHROMATIC RADIATION
NEAR INFRARED RADIATION
NUMERICAL SOLUTION
PHOSPHORUS COMPOUNDS
RESONATORS
SIGNAL-TO-NOISE RATIO
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
EQUIPMENT
INFRARED RADIATION
LASERS
RADIATIONS
SEMICONDUCTOR DEVICES
SOLID STATE LASERS
426002* - Engineering- Lasers & Masers- (1990-)