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Xue-Feng Jiang, Yun-Feng Xiao, Chang-Ling Zou, Lina He, Chun-Hua Dong, Bei-Bei Li, Yan Li, Fang-Wen Sun, Lan Yang and Qihuang Gong Microcavities: Highly Unidirectional Emission and Ultralow-Threshold Lasing from On-Chip Ultrahigh-Q Microcavities (Adv. Mater. 35/2012) Advanced Materials 24

Article first published online: 4 SEP 2012 | DOI: 10.1002/adma.201290211

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Ultra-high-Q optical whispering gallery microcavities are promising platforms for fundamental studies and applied photonics. A new type of on-chip microcavity is experimentally realized, which features both highly unidirectional emission and ultra-high-Q factors exceeding 100 million in near infrared. By doping erbium into the microcavity, lasing emission in 1550 nm band is observed under a convenient freespace optical pumping, with the threshold as low as 2 μW. More details can be found in the article by Q. Gong, Y.-F. Xiao, and co-workers on page OP260.

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