Patent ID: 9077147
Filing Date: 2015-07-07
Classification: B23K,H01S

Abstract:
1. A burst mode oscillation apparatus for a laser system, comprising: a seed beam generator having a laser and a direct modulator, where the direct modulator is configured to receive electrical input signals having different pulse widths, to modulate the received electrical input signals to generate modulated light signals having the same repetition rate and different pulse widths, and to output the modulated light signals to the laser; an amplifier configured to amplify the modulated light signals and output amplified pulse light; and a non-linear wavelength converter configured to convert wavelengths of the amplified pulse light and output wavelength-converted light, wherein the direct modulator determines a critical value for the wavelength conversion based on a magnitude of the shortest pulse width; and wherein wavelength conversion is not performed when the modulated light signals have peak outputs less than or equal to the critical value or the wavelength-converted light has lower amplitudes than the amplified pulse light.