All-Solid-State 556-nm Yellow Laser by LBO Intracavity-Frequency-Doubling

The generation of yellow laser mostly uses the laser transitions from ()~4F_(3/2) to ()~4I_(11/2) and ()~4F_(3/2) to ()~4I_(13/2) of Nd~(3+) doped crystal and adopts the technology of intracavity-frequency-mixing, but there are many difficulties for obtaining the high quality facula and high stable output power, thus the method of intracavity-frequency-doubling is proposed. The 1112-nm, 1116-nm, 1123-nm laser operations which have lower gain are obtained through suppressing the laser operations (at 1064 nm, 1319 nm, 946 nm) which have higher gain by film coated design of the cavity. Through the film coated designing and the frequency-doubling crystal selecting and aligning, the 556-nm yellow laser is obtained. The maximum output power is 102 mW, the light to light conversion efficiency is 6.4% when the incident pump power is 1.6 W.