TY - JOUR
T1 - Single-mode operation of a large optically pumped triangular laser with lateral air trenches
AU - Liu, Danyu
AU - Hattori, Haroldo T.
AU - Fu, Lan
AU - Tan, Hark Hoe
AU - Jagadish, Chennupati
PY - 2009/7/1
Y1 - 2009/7/1
N2 - A triangular resonator has fewer modes than other polygonal lasers such as microdisk and square lasers with similar areas. However, a large resonator with a side of 8 μm can still resonate at many distinct wavelengths. We show experimentally that the introduction of air trenches to the sides of the triangular resonator can lead to single-mode operation of the laser device. The air trenches will considerably increase the radiation losses of most of the resonant modes, except for a mode with weak magnetic fields at the position of the trenches. This high quality factor mode will be the only mode able to reach lasing in the modified structure, as we show experimentally.
AB - A triangular resonator has fewer modes than other polygonal lasers such as microdisk and square lasers with similar areas. However, a large resonator with a side of 8 μm can still resonate at many distinct wavelengths. We show experimentally that the introduction of air trenches to the sides of the triangular resonator can lead to single-mode operation of the laser device. The air trenches will considerably increase the radiation losses of most of the resonant modes, except for a mode with weak magnetic fields at the position of the trenches. This high quality factor mode will be the only mode able to reach lasing in the modified structure, as we show experimentally.
UR - http://www.scopus.com/inward/record.url?scp=67849095514&partnerID=8YFLogxK
U2 - 10.1364/JOSAB.26.001417
DO - 10.1364/JOSAB.26.001417
M3 - Article
SN - 0740-3224
VL - 26
SP - 1417
EP - 1422
JO - Journal of the Optical Society of America B: Optical Physics
JF - Journal of the Optical Society of America B: Optical Physics
IS - 7
ER -