GaAsP tunable distributed Bragg reflector laser with indium tin oxide thin-film heater

A GaAsP quantum well tunable distributed Bragg reflector (DBR) laser with a thin-film heater above a DBR grating was designed and fabricated. As a result of the optimization of the DBR grating to obtain both high reflectivity and sharp wavelength selectivity, single-mode lasing with an output power...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2016-08, Vol.55 (8S3), p.8-08RH01
Main Authors: Uemukai, Masahiro, Suhara, Toshiaki
Format: Article
Language:English
Subjects:
Bragg reflectors
Heaters
Heating equipment
Lasers
Lasing
Thin films
Tuning
Wavelengths
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Summary:A GaAsP quantum well tunable distributed Bragg reflector (DBR) laser with a thin-film heater above a DBR grating was designed and fabricated. As a result of the optimization of the DBR grating to obtain both high reflectivity and sharp wavelength selectivity, single-mode lasing with an output power of 54 mW and a side-mode suppression ratio of 43 dB was obtained. By forming the transparent thin-film heater at a distance of 0.1 µm above the DBR grating, the DBR grating was heated locally and efficiently, and a wide wavelength tuning range of 5.2 nm was achieved by heating with a heater power as low as 160 mW.
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAP.55.08RH01