T-shaped cavity dual-frequency Nd:YAG laser with electro-optical modulation

Junhong Xing; Mingxing Jiao; Yun Liu

doi:10.1117/1.OE.55.5.056115

27 May 2016 T-shaped cavity dual-frequency Nd:YAG laser with electro-optical modulation

Junhong Xing, Mingxing Jiao, Yun Liu

Author Affiliations +

Optical Engineering, Vol. 55, Issue 5, 056115 (May 2016). https://doi.org/10.1117/1.OE.55.5.056115

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.

Citation Download Citation

Junhong Xing, Mingxing Jiao, and Yun Liu "T-shaped cavity dual-frequency Nd:YAG laser with electro-optical modulation," Optical Engineering 55(5), 056115 (27 May 2016). https://doi.org/10.1117/1.OE.55.5.056115

Published: 27 May 2016

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