TY - JOUR
T1 - Narrow linewidth Brillouin laser based on chalcogenide photonic chip
AU - Kabakova, Irina V.
AU - Pant, Ravi
AU - Choi, Duk Yong
AU - Debbarma, Sukhanta
AU - Luther-Davies, Barry
AU - Madden, Stephen J.
AU - Eggleton, Benjamin J.
PY - 2013/9/1
Y1 - 2013/9/1
N2 - We present, to the best of our knowledge, the first demonstration of a narrow linewidth, waveguide-based Brillouin laser that is enabled by large Brillouin gain of a chalcogenide chip. The waveguides are equipped with vertical tapers for low-loss coupling. Due to optical feedback for the Stokes wave, the lasing threshold is reduced to 360 mW, which is five times lower than the calculated single-pass Brillouin threshold for the same waveguide. The slope efficiency of the laser is found to be 30%, and the linewidth of 100 kHz is measured using a self-heterodyne method.
AB - We present, to the best of our knowledge, the first demonstration of a narrow linewidth, waveguide-based Brillouin laser that is enabled by large Brillouin gain of a chalcogenide chip. The waveguides are equipped with vertical tapers for low-loss coupling. Due to optical feedback for the Stokes wave, the lasing threshold is reduced to 360 mW, which is five times lower than the calculated single-pass Brillouin threshold for the same waveguide. The slope efficiency of the laser is found to be 30%, and the linewidth of 100 kHz is measured using a self-heterodyne method.
UR - http://www.scopus.com/inward/record.url?scp=84883440934&partnerID=8YFLogxK
U2 - 10.1364/OL.38.003208
DO - 10.1364/OL.38.003208
M3 - Article
SN - 0146-9592
VL - 38
SP - 3208
EP - 3211
JO - Optics Letters
JF - Optics Letters
IS - 17
ER -