# Nonlinear gain in a SHG crystal

by kiviuq
Tags: crystal, gain, nonlinear
 P: 1 I'm not a native English speaker so I need some clarification about the term "nonlinear gain" concerning a laser experiment. In detail I'm working on a lab report where I'm supposed to estimate the nonlinear gain of a KTP crystal in a Nd:YAG LASER using the intracavity second harmonic generation technique. We measured the output power of the fundamental wavelength of the Laser (1064nm) $$P_\omega(P_{\mathrm {diode}})$$ and the output power of the SHG (523 nm) $$P_{2\omega}(P_{\mathrm {diode}})$$ where $$P_{\mathrm {diode}}$$ is the Laser diode pump power. The "non linear" gain must be expressed in units of %/W Thanks for your help!

 Related Discussions Materials & Chemical Engineering 8 General Physics 9 Electrical Engineering 0 Electrical Engineering 7 General Math 6