Compact vertically stacked master oscillator power amplifier based on grating coupled laser diodes
Abbreviated Journal Title
IEEE Photonics Technol. Lett.
integrated optoelectronics; optical coupling; semiconductor lasers; semiconductor optical amplifiers (SOAs); SURFACE-EMITTING LASER; Engineering, Electrical & Electronic; Optics; Physics, Applied
A new design of hybrid master oscillator power amplifier (MOPA) has been proposed and realized by vertically stacking laser diodes with optical coupling provided by identical in-plane integrated gratings. Low beam divergence, large emitting and input areas of the grating coupled devices simplify the assembling technique over the fabrication of MOPA devices based on edge-emitting laser diodes. The master oscillator also incorporates a dual-grating reflector providing a wavelength-selective feedback resulting in a narrow emission spectrum of 0.2 nm at a wavelength of 975.4 nm. The power amplifier is a tapered chip with two integrated grating couplers. The operational characteristics of the MOPA were evaluated in the pulse regime demonstrating an output peak power of 32 W with a total amplification factor of 9.3 dB.
Ieee Photonics Technology Letters
"Compact vertically stacked master oscillator power amplifier based on grating coupled laser diodes" (2006). Faculty Bibliography 2000s. 6603.