Surface-grating distributed Bragg reflector lasers with deeply etched grooves formed by reactive beam etching

被引：0

作者：

Oku, Satoshi ^{[1
]}

Kondo, Susumu ^{[1
]}

Noguchi, Yoshio ^{[1
]}

Hirono, Takuo ^{[1
]}

Nakao, Masashi ^{[1
]}

Tamamura, Toshiaki ^{[1
]}

机构：

[1] NTT Opto-electronics Laboratories, 3-1 Morinosato Wakamiya, Atsugi-shi, Kanagawa 243-0198, Japan

来源：

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers | 1999年 / 38卷 / 2 B期

关键词：

Experimental; (EXP);

D O I：

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摘要：

Two surface-grating distributed Bragg reflector (DBR) lasers, one using a 1.55-μm-wavelength InP-based material system and one using a 0.98-μm-wavelength GaAs/AlGaAs material system, were made using the same reactive beam etching technique following single-step growth of the layer structure for the lasers. A 800-nm-deep grooved grating with a 240 nm period for 1.55-μm-wavelength first-order diffraction and one with a 150 nm period for 0.98-μm-wavelength first-order diffraction were formed using electron-beam lithography and Br2-N2 mixed-gas reactive beam etching. Single-longitudinal-mode operation with a side-mode suppression ratio of over 27 dB was obtained for both lasers; the output power was more than 15 mW for the 0.98-μm one. Between 15 and 55°C, the measured temperature dependence of the lasing wavelength for both lasers was about 0.1 nm/°C, which is one-fifth of the dependence of a Fabry-Perot-type laser. The performance of these lasers indicates the wide applicability of the present etching technique to the fabrication of various wavelength-selective devices.

引用

页码：1256 / 1260