Investigation of a new Yb0.19Y0.34Lu0.12Gd0.35Ca4O(BO3)3 mixed oxyborate crystal for near-IR microchip lasers

Spectroscopic properties and laser emission of Yb0.05Y0.20La0.12Gd0.63Ca4O(BO3)3 mixed oxyborate crystal

“…Apart from the ordered Yb:YCOB and Yb:GdCOB, which have been extensively studied since their appearance at the end of last century, Yb-doped mixed oxyborates containing two or three inert lanthanide rare-earth elements of Y, Gd or Lu have recently also received much attention. These include Yb:YGdCOB [3][4][5][6][7], Yb:LuGdCOB [8], and Yb:YLuGdCOB [9][10][11][12]. It has been shown experimentally that such mixed oxyborates are comparable to or even better than their ordered counterparts in continuous-wave (CW) laser performance [3,11,12].…”

“…These include Yb:YGdCOB [3][4][5][6][7], Yb:LuGdCOB [8], and Yb:YLuGdCOB [9][10][11][12]. It has been shown experimentally that such mixed oxyborates are comparable to or even better than their ordered counterparts in continuous-wave (CW) laser performance [3,11,12].…”