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A measurement of modal gain profile and its effect on the lasing performance in vertical-external-cavity surface-emitting lasers
- Authors
- Kim, Jun-Youn; Cho, Soohaeng; Lee, Junho; Kim, Gi Bum; Lim, Seong-In; Yoo, Jaeryung; Kim, Ki-Sung; Lee, Sang-Moon; Shim, Jongin; Kim, Taek; Park, Yongjo
- Issue Date
- Nov-2006
- Publisher
- Institute of Electrical and Electronics Engineers
- Keywords
- external cavity lasers; high power laser; second-harmonic generation (SHG); vertical-cavity lasers
- Citation
- IEEE Photonics Technology Letters, v.18, no.21-24, pp.2496 - 2498
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE Photonics Technology Letters
- Volume
- 18
- Number
- 21-24
- Start Page
- 2496
- End Page
- 2498
- ISSN
- 1041-1135
- 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.
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Related Researcher
- Shim, Jong In
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY (DEPARTMENT OF PHOTONICS AND NANOELECTRONICS)