All-solid-state intracavity frequency-doubled Nd:Y0.36Gd0.64VO4-GdCa4O(BO3)3 green laser under direct 880 nm pumping

Abstract

We report a green laser at 532 nm generation by intracavity frequency doubling of a continuous wave (CW) laser operation of a 1064 nm Nd:Y 0.36 Gd 0.64 VO 4 laser under in band diode pumping at 880 nm. An GdCa 4 O(BO 3 ) 3 (GdCOB) crystal, cut for critical type I phase matching at room temperature is used for second harmonic generation of the laser. At an incident pump power of 17.8 W, as high as 2.92 W of CW out put power at 532 nm is achieved. The optical-to-optical conversion efficiency is up to 16.4%, and the fluc tuation of the green output power was better than 2.5% in the given 30 min.

Diode lasers: From laboratory to industry

“…For the empowerment of existing and new applications, a long-standing and ongoing effort is continued for investigating novel gain hosts [92]. 669 nm CW intracavity frequency doubled Nd:YAG-KTiOPO 4 red laser [93], 7 W laser diode end-pumped Nd:YVO 4 passively mode-locking laser [94], intracavity frequency doubled Nd:Y 0.36 Gd 0.64 VO 4 -GdCa 4 O(BO 3 ) 3 green laser at 532 nm [95], and diode-pumped tunable single frequency Tm:YAG laser with two etalons [96] were among few DPSSLs that have recently appeared on the scene.…”