All-solid-state Yb:KYW-LBO blue-green laser at 500 nm

It is reported that efficient continuous-wave (CW) blue-green laser generation at 500 nm in a LBO crystal at type-I phase matching direction performed with a Ti:sapphire laser-pumped Yb:KYW laser. With incident pump power of 8.7 W, output power of 138 mW at 500 nm has been obtained using a 10 mm-long LBO crystal. At the output power level of 138 mW, the blue-green output stability is better than 2.8%. The blue-green beam quality M 2 values were equal to 1.25 and 1.18 in X and Y directions, respectively.