Photonic molecule lasing.
Lasing at resonantly coupled whispering-gallery mode frequencies is observed in photonic molecules consisting of bispheres of 4.2 and 5.1 microm in diameter placed in a silicon V-groove. We examine spatial profiles of photonic molecule modes by use of frequency-resolved imaging and reveal bonding and antibonding mode features. From the lasing threshold characteristics, we quantitatively measure the quality factor and the spontaneous-emission coupling ratio of the photonic molecule modes and confirm that strong coherent coupling leads to photonic molecule modes.
Hara
Yoshiko
Y
Department of Applied Physics, University of Tokyo, Tokyo, Japan.
Mukaiyama
Takashi
T
Takeda
Kenji
K
Kuwata-Gonokami
Makoto
M