Highly efficient Nd:LuVO4 laser by direct in-band diode pumping at 915 nm

Abstract

A Nd:LuVO 4 crystal was pumped directly into the emitting level by a laser diode at 915 nm for the first time to our knowledge. We achieved an output power of 6.7 W at 1066 nm for an absorbed pump power of 8.4 W, corresponding to an optical-to-optical conversion efficiency of 79.8%. A decrease of about 20% in heat generation under 915 nm pumping was observed compared with the 880 nm pumping.

All solid-state CW Nd:LuVO4-LBO yellow-green laser under direct 888 nm pumping

“…The Nd:LuVO 4 are pumped into the highly absorbing level by diode laser around 809 nm. Successful attempts to lase the Nd:LuVO 4 have been reported [34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52]. Recently, the Nd:LuVO 4 laser under direct 880 nm diode laser pumping was reported [53][54][55][56][57][58].…”

Diode-pumped Nd:LGS laser emitting at 888 nm

“…The other way is to develop lasers emitting at the lowest wavelength possible in the near infrared [2] and to perform nonlinear conversion. Various solid lasers in blue spectra range [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] have been obtained by nonlinear conversion of the transi tion of solid lasers [18][19][20][21][22][23][24][25][26][27]. These blue lasers are effi cient and powerful, nevertheless their wavelengths are too high compared to the 442 nm He-Cd laser.…”

All-solid-state continuous-wave frequency-doubling Nd:LuVO4/GBCOB laser at 533 nm

“…Moreover, Nd:LuVO 4 crystal has a high damage threshold, and it is easy to process [2]. Some papers about Nd:LuVO 4 laser have been reported recently [3][4][5][6][7][8][9][10][11][12][13][14][15]. Diode pumped Nd doped lasers operating in visible spectral regions have wide applications in the fields of industry, defense, and medical treatment.…”