Grating-based red lasers

Bardia Pezeshki; Mats Hagberg; Michael Zelinski; Sarah Zou; Emil I. Kolev

doi:10.1117/12.344528

1 April 1999 Grating-based red lasers

Bardia Pezeshki, Mats Hagberg, Michael Zelinski, Sarah Zou, Emil I. Kolev

Proceedings Volume 3628, In-Plane Semiconductor Lasers III; (1999) https://doi.org/10.1117/12.344528
Event: Optoelectronics '99 - Integrated Optoelectronic Devices, 1999, San Jose, CA, United States

Abstract

We have demonstrated a number of high power and single- frequency lasers at 635 - 680 nm by incorporating a grating reflector within the device, including DBRs, tunable DBRs, monolithic MOPAs, DFBs, and angled-grating DFBs. The DBR laser, with an unpumped grating as the rear reflector, is the simplest single-frequency structure, with about 20 mW output power. The device can be tuned about 3 nm by injecting current in the rear grating. Higher output power can be obtained by combining the DBR with a flared amplifier to form a monolithic MOPA with over 250 mW CW output power. Unlike DBR structures, the DFBs have a grating throughout their gain region, and therefore show no mode hops. Wavelengths as short as 634 nm and output powers as high as 90 mW have been obtained with DFBs. An angle-grating DFB is a broad area device where the angled grating forces lasing in a single spatial and longitudinal mode. More than 400 mW in single-frequency power has been obtained at 660 nm from such a structure. In general, grating-based red lasers are useful for interferometry, spectroscopy, and fiber-coupling applications.

Citation Download Citation

Bardia Pezeshki, Mats Hagberg, Michael Zelinski, Sarah Zou, and Emil I. Kolev "Grating-based red lasers", Proc. SPIE 3628, In-Plane Semiconductor Lasers III, (1 April 1999); https://doi.org/10.1117/12.344528

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KEYWORDS

Amplifiers

Diffraction gratings

Reflectors

Reflectivity

Refractive index

Fabry–Perot interferometers

Indium gallium phosphide

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