Photonic molecule lasing |
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| Authors: | Hara Yoshiko Mukaiyama Takashi Takeda Kenji Kuwata-Gonokami Makoto |
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| Institution: | Department of Applied Physics, University of Tokyo, Tokyo, Japan. |
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| Abstract: | 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. |
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