Hysteresis loop and pattern from the dual-wavelength competition in an Nd:YVO4 laser with an intracavity periodically-poled lithium niobate Bragg modulator

Kun Guei Hong, Shoutai Lin, Ming Dar Wei

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

Abstract

This study demonstrates hysteresis loop and pattern formation in a Nd:YVO4 laser at 1064nm (4F3/24I11/2) and 1342nm (4F3/24I13/2) with an intracavity electro-optic periodically poled lithium niobate (EO PPLN) Bragg modulator by using a T-type cavity configuration. Based on these dual wavelengths sharing population inversion in the same upper energy level to lase, the transmission, Tp, of EO PPLN was chosen as the controlling parameter to explore the dynamics of dualwavelength competition. A hysteresis loop occurred when the extracting efficiencies of dual wavelength were near equivalent. When the pump power was 9.0 W, the hysteresis loop was observed in the region of the transmission of PPLN between Tp=64.88% to Tp=84.47%. The slope efficiencies were 25.96 and 3.92% and the thresholds were 2.5 and 3.5 W for the wavelengths of 1064 and 1342 nm, respectively. The width of the hysteresis loop increased when the pump power increased. Moreover, the hysteresis loop accompanied with the variation of the pattern formation. A high-order transvers mode was easily observed at 1342 nm light, but a simple spot existed for 1064 nm light. Apparently, the role of gain competition is worthy to deeply explore.

Original languageEnglish
Title of host publicationLaser Beam Shaping XV
EditorsAndrew Forbes, Todd E. Lizotte
PublisherSPIE
ISBN (Electronic)9781628412215
DOIs
Publication statusPublished - 2014 Jan 1
EventLaser Beam Shaping XV - San Diego, United States
Duration: 2014 Aug 172014 Aug 19

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9194
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherLaser Beam Shaping XV
CountryUnited States
CitySan Diego
Period14-08-1714-08-19

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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    Hong, K. G., Lin, S., & Wei, M. D. (2014). Hysteresis loop and pattern from the dual-wavelength competition in an Nd:YVO4 laser with an intracavity periodically-poled lithium niobate Bragg modulator. In A. Forbes, & T. E. Lizotte (Eds.), Laser Beam Shaping XV [919413] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9194). SPIE. https://doi.org/10.1117/12.2061496