Picosecond tunable gain-switched blue pulses from GaN laser diodes with nanosecond current injections

被引：9

作者：

Chen, Shaoqiang ^{[1
,4
]}

Nakamura, Takahiro ^{[2
]}

Ito, Takashi ^{[2
,4
]}

Bao, Xumin ^{[1
]}

Nakamae, Hidekazu ^{[2
,4
]}

Weng, Guoen ^{[1
]}

Hu, Xiaobo ^{[1
,4
]}

Yoshita, Masahiro ^{[3
]}

Akiyama, Hidefumi ^{[2
]}

Liu, Jianping

Ikeda, Masao

Yang, Hui

机构：

[1] East China Normal Univ, Dept Elect & Engn, 500 Dongchuan Rd, Shanghai 200241, Peoples R China

[2] Univ Tokyo, Inst Solid State Phys, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778581, Japan

[3] Natl Inst Adv Ind Sci & Technol, Res Ctr Photovolta, 1-1-1 Umezono, Tsukuba, Ibaraki 305860, Japan

[4] Chinese Acad Sci, SINANO, Kiev Lab Nanodevicvs & Appl Suzhou, Suzhou 215123, Peoples R China

来源：

OPTICS EXPRESS | 2017年 / 25卷 / 12期

关键词：

DISTRIBUTED-FEEDBACK LASER; SEMICONDUCTOR-LASERS; GROWTH; GENERATION; FEMTOSECOND; MODULATION; EFFICIENCY; DYNAMICS; WIDTH;

D O I：

10.1364/OE.25.013046

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigated the gain-switching properties of GaN-based ridge-waveguide lasers on free-standing GaN substrates with low-cost nanosecond current injection. It was observed that the output pulses with intense injection consisted of an isolated short pulse with a duration of around 50 ps at the high-energy side and a long steady-state component at the lower energy side independent of the electric pulse duration. The energy separation between the short pulse and steady-state component can be over 30 meV, favoring short-pulse generation with the spectral filtering technique. The duration of the steady-state component can be tuned freely by controlling the duration and voltage of the electric pulse, which is very useful for generating pulse-width-tunable optical pulses for various applications. (C) 2017 Optical Society of America

引用

页码：13046 / 13054

页数：9

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