Abstract
Dual-wavelength external cavity resonance is achieved by Hansch-Couillaud(HC) frequency locking technology based on diffusion bonded KTP crystal. The HC frequency locking scheme based on diffusion bonded KTP crystal is analyzed theoretically and experimentally. The results show that the laser frequency can be locked to the resonance peak of e1-light or e2-light, compared with the results of a single KTP crystal. The longitude mode frequency of bow-tie cavity is locked at the frequency of 938nm laser firstly, and then the longitude mode frequency of bow-tie cavity is locked at the frequency of 1583 nm laser. The phase correlated locking of three components is realized.
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