Patent ID: 8373924
Filing Date: 2013-02-12
Classification: G02F

Abstract:
1. Optical apparatus, comprising: a fiber-MOPA, the fiber MOPA including an arrangement for providing pulses of radiation having a fundamental wavelength, an arrangement for dividing the fundamental-wavelength pulses into N and M portions, and a corresponding N and M fiber-amplifiers for amplifying respectively the N and M fundamental-wavelength pulse-portions, where N is at least two and M is at least one; an arrangement for generating second-harmonic radiation pulses from the N amplified fundamental-wavelength pulse portions; an arrangement for sum-frequency mixing the second-harmonic radiation pulses with the M amplified fundamental-wavelength pulse-portions to provide pulses of third-harmonic radiation; and an arrangement for excluding from the third-harmonic generation fundamental radiation residual from the second-harmonic generation.