A lot of specific wavelength laser can be obtained by frequency conversion of crystal nonlinear optical effect. And solid state laser by the nonlinear effect has great application prospect in optical communications, laser radar, laser medicine, laser processing and so on.
This is the typical experiment to study and research the crystal nonlinear effect. In the experiment, there is green laser of 532nm output with KTP of extra cavity frequency doubling, then adding LBO and BBO to obtain laser of 355nm and 266nm respectively. The students can master the method of debugging laser, and understand the nonlinear coefficient of frequency doubling, sum-frequency, quadruplicated frequency by the experiment.
Experiment Device
Spot of three kinds of laser
Main points:
a) The concept of nonlinear coefficient and conversion efficiency
b) External cavity frequency doubling
c) Frequency doubling, sum-frequency, quadruplicated frequency technology
d) The measurement and calculation of the frequency doubling efficiency
Output spectrogram of LBO
Output spectrogram of BBO
Related Courses
Principles of Laser, Non-linear Optics, Laser Optics, Laser devices, All Solid State Laser and Nonlinear Optical Frequency Conversion Technology, Laser Spectroscopy
Basic Configuration
Specifications
Laser
Q-switched laser, Wavelength:1064nm(Include current source)
Focusing lens
F1: f1=80mm, with high transmittance film of 1064nm
F1: f1=30mm, with high transmittance film of 532nm
Crystal
KTP, II phase matching (LBO, I phase matching, selectable)
