High aspect ratio DBR gratings for narrow linewidth red lasers
Presented in: SPIE Quantum West 2023 Authors: Luukas Kuusela, Riina Ulkuniemi, Timo Aho, Petteri Uusimaa Presented in: SPIE Quantum West 2023 Authors: Luukas Kuusela, Riina Ulkuniemi, Timo Aho, Petteri Uusimaa In interferometry, spectroscopy, and holography, HeNe lasers or semiconductor lasers with external wavelength stabilization have been widely used to achieve the required narrow linewidth at 633 nm. Semiconductor lasers utilizing wavelength selective grating fabricated on semiconductor chip enable the miniaturization of laser systems while also providing numerous advantages such as low energy consumption, reliability and tunability by temperature and injection current. Moreover, DBR gratings reduce the complexity of the laser system compared Continue reading →