http://pt.aliexpress.com/store/product/KTP-LASER-CRYSTAL-for-YAG-DPSS-SHG-SFM-OPO-optics-frequency-doubling-green/1183809_1749149616.html
6*6*3mm 無色 100美
http://eksmaoptics.com/nonlinear-and-laser-crystals/laser-crystals/nd-yag-crystals/
3r*65 粉色 265 €
