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LED-pumped whispering-gallery laser

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Abstract

A low-cost light-emitting diode (LED) is sufficient to pump a quasi-continuous-wave bidirectional high-Q whispering-gallery resonator laser made of Nd:YVO4. This is remarkable because of the very limited spatial and spectral coherence of an LED. The LED, delivering up to 3.5 W, centered around 810 nm, is turned on in intervals of 100 μs duration, and for these periods a laser output exceeding 0.8 mW has been verified. Furthermore, 0.1-s-long laser pulses are demonstrated. To the best of our knowledge, this is the first demonstration of an LED-pumped high-Q whispering-gallery laser. The concept can be extended easily to other laser active materials. A prospect is also to pump several of such lasers with a single LED.

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DOI:10.1364/prj.5.000b34

基金项目:Deutsche Forschungsgemeinschaft (DFG)10.13039/501100001659 (BR 4194/6-1).

收稿日期:2017-08-15

录用日期:2017-10-10

网络出版日期:2017-10-11

作者单位    点击查看

Simon J. Herr:Laboratory for Optical Systems, Department of Microsystems Engineering, University of Freiburg, Georges-K?hler-Allee 102, 79110 Freiburg, Germany
Karsten Buse:Laboratory for Optical Systems, Department of Microsystems Engineering, University of Freiburg, Georges-K?hler-Allee 102, 79110 Freiburg, GermanyFraunhofer Institute for Physical Measurement Techniques IPM, Heidenhofstra?e 8, 79110 Freiburg, Germany
Ingo Breunig:Laboratory for Optical Systems, Department of Microsystems Engineering, University of Freiburg, Georges-K?hler-Allee 102, 79110 Freiburg, GermanyFraunhofer Institute for Physical Measurement Techniques IPM, Heidenhofstra?e 8, 79110 Freiburg, Germany

联系人作者:Ingo Breunig(ingo.breunig@imtek.uni-freiburg.de)

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引用该论文

Simon J. Herr, Karsten Buse, and Ingo Breunig, "LED-pumped whispering-gallery laser," Photonics Research 5(6), B34 (2017)

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