Highly Unidirectional Emission and Ultralow-Threshold Lasing from On-Chip Ultrahigh-Q Microcavities

Highly Unidirectional Emission and Ultralow-Threshold Lasing from On-Chip Ultrahigh-Q Microcavities

Ultrahigh‐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 supports both highly unidirectional emission and ultra‐high‐Q factors exceeding 100 million in near infrared...

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Veröffentlicht in:Advanced materials (Weinheim) 2012-09, Vol.24 (35), p.OP260-OP264
Hauptverfasser: Jiang, Xue-Feng, Xiao, Yun-Feng, Zou, Chang-Ling, He, Lina, Dong, Chun-Hua, Li, Bei-Bei, Li, Yan, Sun, Fang-Wen, Yang, Lan, Gong, Qihuang
Format: Artikel
Sprache:eng
Schlagworte:
Emission
Erbium
Lasers
Lasing
Materials science
Microcavities
microcavity
Microtechnology - methods
Optical Phenomena
Silicon - chemistry
Silicon Dioxide - chemistry
ultrahigh quality factor
ultralow threshold
unidirectional emission
whispering gallery mode
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Zusammenfassung:Ultrahigh‐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 supports both highly unidirectional emission and ultra‐high‐Q factors exceeding 100 million in near infrared. By doping erbium, the unidirectional‐emission lasing is observed in 1550 nm band with the threshold as low as 2 μW.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201201229