Generation of high-energy geometric structured beams by Off-Axis pumped Nd:YAG/Cr 4+ :YAG lasers with degenerate resonators

Pi Hui Tuan, Yen Hui Hsieh, Hsin Chih Liang, Kuan-Wei Su, Yung-Fu Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Off-axis pumped Nd:YAG/Cr 4+ :YAG lasers under degenerate cavity conditions are explored to achieve high-pulseenergy geometric modes for beam transformation. The employment of Nd:YAG crystal promises efficient passively Qswitched (PQS) operation with a flexible cavity length to ensure various PQS geometric modes with stable structures can be generated. It is experimentally confirmed that the output energy and peak power of the PQS geometric modes can easily reach up to over 100 μJ and 10 kW with fairly stable pulse trains in pure linear polarization. Various high-energy vortex beams carrying large angular momentum and diverse phase structures are achieved by converting the planar geometric modes into the circular ones to offer promising light sources for potential applications.

Original languageEnglish
Title of host publicationOptical Manipulation Conference
EditorsKeiji Sasaki, Takashige Omatsu, Hajime Ishihara
PublisherSPIE
ISBN (Electronic)9781510619814
DOIs
StatePublished - 1 Jan 2018
EventOptical Manipulation Conference 2018 - Yokohama, Japan
Duration: 25 Apr 201827 Apr 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10712
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceOptical Manipulation Conference 2018
CountryJapan
CityYokohama
Period25/04/1827/04/18

Keywords

  • Beam transformation
  • Optical vortices
  • Q-switching
  • Selective pumping

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    Tuan, P. H., Hsieh, Y. H., Liang, H. C., Su, K-W., & Chen, Y-F. (2018). Generation of high-energy geometric structured beams by Off-Axis pumped Nd:YAG/Cr 4+ :YAG lasers with degenerate resonators. In K. Sasaki, T. Omatsu, & H. Ishihara (Eds.), Optical Manipulation Conference [107120S] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10712). SPIE. https://doi.org/10.1117/12.2319158