Diode-pumped Cr:LiSAF laser with two-cavity-combined configuration

We propose and demonstrate a simple approach to lower the thermal quenching effect and improve the output power for Cr:LiSAF lasers, which is accomplished by employing two laser rods in a combined cavity. The resonator contains two laser rods and is designed by using two “X” folding cavities in cascade. CW laser output of ~ 230 mW has been achieved with pump of single-striped laser diodes. Compared with lasers with single gain rod, the laser with dual rods shows less severe thermal effect and increases the output by more than two times.

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