Merged beam laser design for reduction of gain-saturation and two-photon absorption in high power single mode semiconductor lasers

被引：3

作者：

Lysevych, M. ^{[1
]}

Tan, H. H. ^{[1
]}

Karouta, F. ^{[1
]}

Fu, L. ^{[1
]}

Jagadish, C. ^{[1
]}

机构：

[1] Australian Natl Univ, Res Sch Phys & Engn, Dept Elect Mat Engn, Canberra, ACT 0200, Australia

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 07期

基金：

澳大利亚研究理事会;

关键词：

WAVE; OPERATION;

D O I：

10.1364/OE.21.008276

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper we report a method to overcome the limitations of gain-saturation and two-photon absorption faced by developers of high power single mode InP-based lasers and semiconductor optical amplifiers (SOA) including those based on wide-waveguide or slab-coupled optical waveguide laser (SCOWL) technology. The method is based on Y-coupling design of the laser cavity. The reduction in gain-saturation and two-photon absorption in the merged beam laser structures (MBL) are obtained by reducing the intensity of electromagnetic field in the laser cavity. Standard ridge-waveguide lasers and MBLs were fabricated, tested and compared. Despite a slightly higher threshold current, the reduced gain-saturation in MBLs results in higher output power. The MBLs also produced a single spatial mode, as well as a strongly dominating single spectral mode which is the inherent feature of MBL-type cavity. (c) 2013 Optical Society of America

引用

页码：8276 / 8285

页数：10

共 11 条

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