| Title: |
T-shaped cavity dual-frequency Nd:YAG laser with electro-optical modulation. |
| Authors: |
Junhong Xing1 xjh3729@xaut.edu.cn, Mingxing Jiao1, Yun Liu1 |
| Source: |
Optical Engineering. May2016, Vol. 55 Issue 5, p1-6. 6p. |
| Subject Terms: |
*NEODYMIUM lasers, *ELECTRO-optical modulation, *LITHIUM niobate, *INTERFEROMETRY, *SUBMILLIMETER wave generation |
| Abstract: |
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. [ABSTRACT FROM AUTHOR] |
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