Control of the pulse duration in a diode-pumped passively Q-switched intracavity frequency-doubling laser

High electrical-to-green efficiency high stability intracavity-frequency-doubled Nd:YAG-LBO QCW 532 nm laser with a straight cavity

“…Y. Hi- Although the average output power of 532 nm green laser has increased rapidly to more than 400 W at recent years [1][2][3][4][5][6][7][8][9][10], the electrical-to-green efficiency has not exceeded 7.9% [2] yet. In our opinion, three factors limit the efficiency: astigmatism loss induced by the concave foldmirror [7,8,[11][12][13], relatively low transmittance at 532 nm and reflection at 1064 nm of the dichroic fold-mirror, difficulties in adjusting the complex system. In order to avoid the above factors limiting the efficiency, we adopted a straight cavity introduced in [14,15].…”

“…In our opinion, three factors limit the efficiency: astigmatism loss induced by the concave foldmirror [7,8,[11][12][13], relatively low transmittance at 532 nm and reflection at 1064 nm of the dichroic fold-mirror, difficulties in adjusting the complex system. In order to avoid the above factors limiting the efficiency, we adopted a straight cavity introduced in [14,15].…”

Continuous-wave Nd:GdVO4/LBO laser at 541.5 nm under diode pumping into the emitting level

“…Another vanadate crystal, Nd:GdVO 4 , which was confirmed to be supe rior to Nd:YVO 4 in thermal properties, was also inves tigated extensively. The research to output wavelengths involving Nd:GdVO 4 crystals were mostly focused at 1063 nm [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30], 1341 nm [31][32][33][34][35][36][37], and 912 nm [38][39][40][41][42][43]. However, through the analysis of a spectroscopic study has demonstrated that there are three or four emission bands on the F 3/2 -I 11/2 transition of Nd:GdVO 4 crystal.…”

The generation of a continuous-wave Nd:YVO4/LBO laser at 543 nm by direct in-band diode pumping at 888 nm

“…A well-known representative crystal is Nd:YVO 4 , which has been widely used in both research and commercial device production. The research on output wavelengths involving Nd:YVO 4 crystals has been mostly focused at 1064 nm [16][17][18][19][20][21][22][23][24][25][26][27], 1342 nm [28][29][30][31][32][33][34] and 914 nm [35][36][37][38][39][40]. However, the analysis of a spectroscopic study has demonstrated that there are three or four emission bands for the F 3/2 -I 11/2 transition of Nd:YVO 4 crystal.…”