Patent ID: 8111451
Filing Date: 2012-02-07
Classification: G02F,H01S

Abstract:
1. A laser system operative to emit an output light at a desired frequency, comprising: a master oscillator power amplifier (“MOPA”). fiber unit configured with a master oscillator operative to generate a signal light at a first frequency from a band of frequencies, which has a resonant frequency, and a power amplifier operative to amplify the signal light; a frequency conversion unit receiving the amplified signal light at the first frequency and operative to convert the first frequency so as to radiate the output light at a second frequency, the second frequency substantially matching the desired frequency in response to receiving the amplified signal light at the resonant frequency; a control unit coupled to the frequency conversion unit and operative to compare the converted second frequency to a reference value which corresponds to the desired frequency, the control unit outputting a control signal if the second frequency is not substantially matched to the reference value; and a pump unit coupled to the master oscillator and to the control unit and radiating a pump light coupled into the master oscillator at a third frequency, the control signal being coupled into the pump unit so as to adjust a power of the pump light until the first frequency of the signal light substantially matches the resonant frequency.