Patent ID: 9077144
Filing Date: 2015-07-07
Classification: H01S

Abstract:
1. A master oscillator-power amplifier (MOPA) device, comprising: a monolithic MOPA chip comprising a semiconductor substrate and at least one MOPA structure formed upon the substrate, the at least one MOPA structure comprising: a MOPA driver electrically connected to the first and second electrical contacts for driving the first electrical current through the MO section and the second electrical current through the PA section to initiate lasing in the MO section at the laser wavelength while providing optical amplification in the PA section, wherein the MOPA driver comprises a controller that is configured to vary the first electrical current in dependence upon the second electrical current so that when the second electrical current through the PA section is increased for increasing the optical power of the output light, the first electrical current through the MO section is decreased so at to maintain the laser wavelength constant.