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Q-switched Nd:YAG optical vortex lasersopen access
- Authors
- Kim, Dong-joon; Kim, Ji Won; Clarkson, W. Andrew
- Issue Date
- Dec-2013
- Publisher
- Optical Society of America
- Keywords
- ORBITAL ANGULAR-MOMENTUM; ORDER; MODES; BEAMS
- Citation
- Optics Express, v.21, no.24, pp.29449 - 29454
- Indexed
- SCIE
SCOPUS
- Journal Title
- Optics Express
- Volume
- 21
- Number
- 24
- Start Page
- 29449
- End Page
- 29454
- ISSN
- 1094-4087
- Abstract
- Q-switched operation of a high-quality Nd:YAG optical vortex laser with the first order Laguerre-Gaussian mode and well-determined helical wavefronts using a fiber-based pump beam conditioning scheme is reported. A simple two-mirror resonator incorporating an acousto-optic Q-switch was employed, along with an etalon and a Brewster plate to enforce the particular helicity of the output. The laser yielded Q-switched pulses with similar to 250 mu J pulse energy and similar to 33 ns pulse duration (FWHM) at a 0.1 kHz repetition rate for 5.1 W of absorbed pump power. The handedness of the helical wavefronts was preserved regardless of the repetition rates. The prospects of further power scaling and improved laser performance are discussed. (C)2013 Optical Society of America
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Related Researcher
- Kim, Ji Won
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY (DEPARTMENT OF PHOTONICS AND NANOELECTRONICS)