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High power Er:YAG laser with radially-polarized Laguerre-Gaussian (LG(01)) mode outputopen access
- Issue Date
- Jul-2011
- Publisher
- Optical Society of America
- Keywords
- FIBER; ORBITAL ANGULAR-MOMENTUM; ORDER; ELEMENTS; OPERATION; AXICON; WAVE-GUIDES; LIGHT; BOTTLE BEAM; GENERATION
- Citation
- Optics Express, v.19, no.15, pp.14526 - 14531
- Indexed
- SCIE
SCOPUS
- Journal Title
- Optics Express
- Volume
- 19
- Number
- 15
- Start Page
- 14526
- End Page
- 14531
- ISSN
- 1094-4087
- Abstract
- A simple method for conditioning the pump beam in an end-pumped solid-state laser to allow direct excitation of the first order Laguerre-Gaussian doughnut (LG(01)) mode is reported. This approach has been applied to a hybrid (fiber-laser-pumped) Er: YAG laser yielding 13.1 W of continuous-wave output at 1645 nm in a radially-polarized LG(01) doughnut beam with beam propagation factor (M-2) < 2.4 for 34 W of incident pump power at 1532 nm. The corresponding slope efficiency with respect to incident pump power was 48%. The prospects of further power scaling and improved laser performance are discussed. (C) 2011 Optical Society of America
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Related Researcher
- Kim, Ji Won
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY (DEPARTMENT OF PHOTONICS AND NANOELECTRONICS)