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High-power Er:YAG laser with quasi-top-hat output beam
- Issue Date
- May-2012
- Publisher
- Optical Society of America
- Citation
- Optics Letters, v.37, no.9, pp.1463 - 1465
- Indexed
- SCIE
SCOPUS
- Journal Title
- Optics Letters
- Volume
- 37
- Number
- 9
- Start Page
- 1463
- End Page
- 1465
- ISSN
- 0146-9592
- Abstract
- A simple method for simultaneously exciting the fundamental (TEM00) transverse mode and first order Laguerre-Gaussian (LG(01)) donut mode in an end-pumped solid-state laser to yield a quasi-top-hat output beam is reported. This approach has been applied to an Er:YAG laser, in-band pumped by an Er, Yb fiber laser, yielding 9.6 W of continuous-wave output at 1645 nm in a top-hat-like beam with beam propagation factor (M-2) < 2.1 for 24 W of incident pump power at 1532 nm. The corresponding slope efficiency with respect to incident pump power was 49%. The prospects of further scaling of output power and improved overall efficiency are considered. (C) 2012 Optical Society of America
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Related Researcher
- Kim, Ji Won
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY (DEPARTMENT OF PHOTONICS AND NANOELECTRONICS)