Observation of waveguide Fabry-Perot lasing in highly efficient Si nanocrystals

Zhi-Yuan Yu; Zhi-He Guo; Yu-Chen Zhang; Xun Zhang; Yan Wang; Feng-Yang Ma; Yu Liu; Xia-Yan Xue; Qing-Yuan Jin; Jing Li; Jian Sun; Song-You Wang; Dong-Chen Wang; Ming Lu

Results in Physics (Mar 2022)

Observation of waveguide Fabry-Perot lasing in highly efficient Si nanocrystals

Zhi-Yuan Yu,
Zhi-He Guo,
Yu-Chen Zhang,
Xun Zhang,
Yan Wang,
Feng-Yang Ma,
Yu Liu,
Xia-Yan Xue,
Qing-Yuan Jin,
Jing Li,
Jian Sun,
Song-You Wang,
Dong-Chen Wang,
Ming Lu

Affiliations

Zhi-Yuan Yu: Department of Optical Science and Engineering, and Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Fudan University, Shanghai 200433, China
Zhi-He Guo: Department of Optical Science and Engineering, and Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Fudan University, Shanghai 200433, China
Yu-Chen Zhang: Department of Optical Science and Engineering, and Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Fudan University, Shanghai 200433, China
Xun Zhang: Nanjing Electronic Devices Institute, Nanjing 210016, China
Yan Wang: Nanjing Electronic Devices Institute, Nanjing 210016, China
Feng-Yang Ma: Department of Optical Science and Engineering, and Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Fudan University, Shanghai 200433, China
Yu Liu: Department of Optical Science and Engineering, and Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Fudan University, Shanghai 200433, China
Xia-Yan Xue: Department of Optical Science and Engineering, and Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Fudan University, Shanghai 200433, China
Qing-Yuan Jin: Department of Optical Science and Engineering, and Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Fudan University, Shanghai 200433, China
Jing Li: Department of Optical Science and Engineering, and Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Fudan University, Shanghai 200433, China
Jian Sun: Department of Optical Science and Engineering, and Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Fudan University, Shanghai 200433, China; Yiwu Research Institute of Fudan University, Chengbei Road, Yiwu City, Zhejiang 322000, China
Song-You Wang: Department of Optical Science and Engineering, and Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Fudan University, Shanghai 200433, China; Yiwu Research Institute of Fudan University, Chengbei Road, Yiwu City, Zhejiang 322000, China
Dong-Chen Wang: Nanjing Electronic Devices Institute, Nanjing 210016, China; Corresponding authors.
Ming Lu: Department of Optical Science and Engineering, and Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Fudan University, Shanghai 200433, China; Corresponding authors.

Journal volume & issue: Vol. 34
p. 105336

Abstract

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A luminescent Si nanocrystal (SiNC) thin film with photoluminescence quantum yield (PLQY) > 70% was made by using hydrogen silsesquioxane (HSQ), followed by long-time high-pressure hydrogenation. A net optical gain of 524 ± 21 cm−1 was obtained by means of variable stripe length-shifting excitation spot (VSL-SES). A rectangularly shaped SiO2 Fabry-Perot (F-P) cavity with size of 1.5 μm (width) × 0.7 μm (height) × 2000 μm (length) was made on top of the SiNC thin film. The waveguide F-P device was pumped with a 400 nm femtosecond pulsed laser. A threshold behavior of the light emission intensity as a function of the pumping power was observed. Other lasing characteristics including spectral narrowing, polarization of the emission, and small emission angle were also observed beyond the threshold pumping power.

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

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