Title

A Novel Intra-Cavity Lens Design for Compact High Efficiency Tapered Laser Diodes

Publication Type

Journal Article

Publication Date

2007

Abstract

An integrated parabolic lens capable of introducing a diverging effect to the optical mode propagating within the cavity of a tapered laser is proposed and demonstrated. This idea allows broader high-power beams to be generated by shorter cavities. Diverging lenses with etch depths of 0.13 and 0.27 mum are implemented, with 12 (9.5%) and 16.8 mum (13.3%) overall broadening of the near-fields widths measured at 1/e2 intensity. The peak output power as well as the threshold current is found to increase following the lens etching process, confirming the beneficial broadening effect introduced by the diverging lens.

Keywords

Beam quality, Gaussian beam, catastrophic optical mirror damage (COMD), diverging lens, high-brightness lasers, high-power lasers, integrated lens, mode expansion, tapered lasers

Discipline

Business

Research Areas

Operations Management

Publication

IEEE Photonic Technology Letters

Volume

19

Issue

4

First Page

203

Last Page

205

ISSN

1041-1135

Identifier

10.1109/LPT.2006.890105

Publisher

IEEE