Photothermal-controlled relative frequency stabilization of Nd:YVO4-based monolithic microchip single mode laser with SHG

Microchip resonator Nd:YVO 4 /YVO 4 /KTP/Er:Glass with second-harmonic generation and relative frequency stabilization to 127I 2 iodine vapor atomic transition is presented. Auxiliary 976nm beam is absorbed in Er:Glass leading to the laser frequency control induced by photothermal effect.