27 May 2016 T-shaped cavity dual-frequency Nd:YAG laser with electro-optical modulation
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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.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Junhong Xing, Mingxing Jiao, 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 . Submission:
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