Abstract-Efficient high-power terahertz beating in a dual-wavelength synchronously mode-locked laser with dual gain media

Y. J. Huang, Y. S. Tzeng, C. Y. Tang, S. Y. Chiang, H. C. Liang, and Y. F. Chen  »View Author Affiliations

Optics Letters, Vol. 39, Issue 6, pp. 1477-1480 (2014)
http://dx.doi.org/10.1364/OL.39.001477

http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-39-6-1477

We originally present a novel tactic to accomplish a compact efficient dual-wavelength synchronously mode-locked laser by physically combining the Nd:YVO4 crystal to the Nd:GdVO4 crystal as a composite gain medium. With the developed method, the total output power at 1.06 μm could be effectually produced to reach 1.3 W under the optimally balanced two-color intensities. The corresponding mode-locked pulse width and repetition rate are measured to be 47 ps and 2.86 GHz, respectively. Through the optical beating between two carrier frequencies of dual-color synchronous pulses, a train of 0.32 THz ultrashort pulses is further generated with the effective duration of down to 1.6 ps.

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