Patent ID: 6021141
Filing Date: 2000-02-01
Classification: H01S

Abstract:
A frequency converting light emitting device comprising,a semiconductor laser emitting a light beam of a first wavelength,a nonlinear frequency converting material optically coupled to said laser to receive said light beam, said nonlinear converting material oriented for carrying out frequency conversion of said light beam received from said laser, said nonlinear frequency converting material having a temperature dependent resonance wavelength band for converting light of said first wavelength that coincides with said resonance wavelength band to a second wavelength;temperature control means in thermal communication with said nonlinear frequency converting material for setting a temperature of said nonlinear frequencyconverting material to correspond to a selected resonance wavelength band including said second wavelength;means for coarse tuning said laser such that said first wavelength of said light beam emitted by said laser coincides with said selected resonance wavelength band of said nonlinear frequency converting material for converting to said second wavelength;said temperature control means for fine tuning said second wavelength after coarse tuning of said first wavelength.