Ho YAG laser crystal for 2100nm eye safe laser of laser ranging and medical surgery
The radiationwavelength of Ho3+ ions is near 2100nm, which is located in the human eye safe
band and has high transmittance in the atmosphere and has important application
prospect in the fields of remote sensing detection, laser ranging, and laser
radar, etc. Meanwhile, 2100nm locates in the absorption peak of the water
molecule, which is highly absorbed by human tissues. When Ho laser is used for
medical surgery, its penetration depth in the human body is only a few tens of
micrometers, and it has little heat damage to the surrounding tissues of the
human body. Therefore, it is widely used in medical surgery and treatment. Ho
laser can also be used as a pump source, through the non-linear effect of
crystal (such as ZGP crystal), an infrared laser with the wavelength of 3 ~ 5
mm can be realized.
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