Nd:YVO4-Nd:YAG single-crystal fiber hybrid continuous-wave single-frequency 1064 nm laser

A hybrid high-power continuous-wave (CW) single-frequency 1064 nm laser is presented in this paper, where both two Nd:YVO 4 bulk crystals and two Nd:YAG single-crystal fibers (SCFs) are employed as the gain media. By combining the advantages of the good thermal management characteristic of the Nd:YAG SCF with the natural birefringence effect of the Nd:YVO 4 bulk crystal, a stable single-frequency laser with high output power is easily achieved. Based on this scheme, a 120 W hybrid CW single-frequency 1064 nm laser is experimentally obtained, which is the first, to the best of our knowledge, single-frequency laser by employing the SCF as the gain medium. The presented design paves an effective way for implementing a high-power single-frequency laser based on a single resonator.