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T-shaped cavity dual-frequency Nd:YAG laser with electro-optical modulation
Author(s): Junhong Xing; Mingxing Jiao; Yun Liu
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Paper Abstract

A T-shaped cavity dual-frequency Nd:YAG laser with electro-optical modulation is proposed, which consists of both p- and s-cavities sharing the same gain medium of Nd:YAG. Each cavity was not only able to select longitudinal mode but also tune frequency using an electro-optic birefringent filter polarization beam splitter + lithium niobate. The frequency difference of dual frequency was tuned through the whole gain bandwidth of Nd:YAG, which is far above the usually accepted free spectral range value in the case of a single-axis laser. As a result, the simultaneous operation of orthogonally and linearly polarized dual-frequency laser was obtained, which coincides with the theoretical analysis based on Jones matrices. The obtained frequency difference ranges from 0 to 132 GHz. This offers a simple and widely tunable source with potential for portable frequency reference applications in terahertz-wave generation and absolute-distance interferometry measurement areas.

Paper Details

Date Published: 27 May 2016
PDF: 6 pages
Opt. Eng. 55(5) 056115 doi: 10.1117/1.OE.55.5.056115
Published in: Optical Engineering Volume 55, Issue 5
Show Author Affiliations
Junhong Xing, Xi'an Univ. of Technology (China)
Mingxing Jiao, Xi'an Univ. of Technology (China)
Yun Liu, Xi'an Univ. of Technology (China)

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