Over 1 hour continuous-wave operation of photonic crystal lasers.
We report on the long lifetime (>1 hour) of photonic crystal (PC) lasers under continuous-wave (CW) operation. For stable CW operation, we van-der-Waals-bonded our PC lasers to a novel submount structure consisting of MgF2-diamond bilayers on silicon substrate, which simultaneously ensures vertical mode confinement and efficient heat spread/dissipation. The combination of a Γ-point band-edge mode and butt-end fiber coupling yielded high CW fiber-coupled output power (~200 μW). The results demonstrate that the CW lifetime of PC lasers can be extended to the level for practical applications.
Department of Physics and Astronomy & Inter-university Semiconductor Research Center, Seoul National University, Seoul, South Korea.
Sunghwan
S
Kim
Jeongkug
J
Lee
Heonsu
H
Jeon