A Measurement of Modal Gain Profile and Its Effect on the Lasing Performance in Vertical-External-Cavity Surface-Emitting Lasers

Author

Kim, Jun-Youn ; Cho, Soohaeng ; Lee, Junho ; Kim, Gi Bum ; Lim, Seong-Jin ; Yoo, Jaeryung ; Kim, Ki-Sung ; Lee, Sang-Moon ; Shim, Jongin ; Kim, Taek ; Park, YongJo

Author_Institution

Photonics Project Team in Display Device & Material Lab., Samsung Adv. Inst. of Technol., Suwon

Volume

18

Issue

23

fYear

2006

Firstpage

2496

Lastpage

2498

Abstract

We investigate the effect of relative wavelength difference between material gain and resonance peaks on lasing performance in vertical-external-cavity surface-emitting lasers (VECSELs). We propose a measurement method of the wavelength-dependent modal gain profiles by inserting a birefringent filter inside a cavity in order to modulate the optical loss according to the wavelength. With knowledge of the detailed gain profiles, we achieve a stable green output power of 3.3 W and a power conversion efficiency (= green output power/pump input power) of 17% in VECSEL with a LiB₃O₅ crystal as an intracavity frequency doubler

Keywords

birefringence; laser stability; laser variables measurement; lithium compounds; optical filters; optical harmonic generation; optical materials; semiconductor lasers; surface emitting lasers; 17 percent; 3.3 W; LiB₃O₅; VECSEL; birefringent filter; intracavity frequency doubler; modal gain profile measurement; optical loss; power conversion efficiency; stable green output power; vertical-external-cavity surface-emitting lasers; Gain measurement; Optical filters; Optical materials; Optical modulation; Optical surface waves; Performance gain; Power generation; Surface emitting lasers; Vertical cavity surface emitting lasers; Wavelength measurement; External cavity lasers; high power laser; second-harmonic generation (SHG); vertical-cavity lasers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2006.887217

Filename

4014257