Monoblock crystal cavity blue light frequency multiplier
A frequency multiplier and crystal cavity technology, which is applied in the field of monolithic crystal cavity blue light frequency multipliers, can solve problems such as being susceptible to external interference, difficult to operate for a long time, and large loss in the inner cavity, so as to reduce the size and structure of the cavity. Stabilize and reduce the effect of cavity loss
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[0043] An integral crystal cavity blue light frequency multiplier, comprising a blue light frequency doubling nonlinear crystal cavity 8 made of Ι type PPKTP crystal; the incident end surface and the transmission end surface of the blue light frequency doubling nonlinear crystal cavity 8 are all ground into a spherical surface, The radius of curvature of the spherical surface and the length of the cavity satisfy that the eigenmode waist spot of the cavity is the same as the waist spot of the Gaussian beam at the center of the crystal; the waist spot of the Gaussian beam at the center of the crystal is determined according to the crystal length and the wavelength of the pump light lambda 1 is the pump light wavelength, n is the refractive index, L c is the crystal length, focusing factor η = 0.7 ~ 1.1; the incident end face of the blue light frequency doubling nonlinear crystal cavity 8 is coated with a film system with a transmittance of 8% to 12% for the pump light and a hig...
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