Cavity Optimization of Electrically Pumped VECSELs
نویسنده
چکیده
Surface-emitting lasers with an external cavity delivering a diffraction-limited beam have shown the potential to outperform edge-emitting devices in applications demanding high brightness (emitted intensity per unit solid angle), like pumping of doped fiber amplifiers or frequency doubling [1]–[3]. Due to the large mode size, the VECSEL concept is powerscalable by expanding the pumped area and the heat-sink. This property makes VECSELs less susceptible to catastrophic optical mirror damage (COMD), spatial hole burning, and thermal lensing in comparison to edge-emitting devices. Similar to the sophisticated vertical-cavity surface-emitting laser (VCSEL), the optical resonator consists of a multiple quantum well gain material which is embedded between three distributed Bragg reflectors (DBRs).
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