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Your search keyword '"Peng, Mingying"' showing total 26 results
Start Over Author "Peng, Mingying" Journal optics express
26 results on '"Peng, Mingying"'

2. kHz-order linewidth controllable 1550 nm single-frequency fiber laser for coherent optical communication

Author

Zhou, Kaijun, primary, Zhao, Qilai, additional, Huang, Xiang, additional, Yang, Changsheng, additional, Li, Can, additional, Zhou, Enbo, additional, Xu, Xiaogeng, additional, Wong, Kenneth K.Y., additional, Cheng, Huihui, additional, Gan, Jiulin, additional, Feng, Zhouming, additional, Peng, Mingying, additional, Yang, Zhongmin, additional, and Xu, Shanhui, additional

Published
2017
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24. Self-injection locked and semiconductor amplified ultrashort cavity single-frequency Yb 3+ -doped phosphate fiber laser at 978 nm.

Author

Huang Z, Deng H, Yang C, Zhao Q, Zhang Y, Zhang Y, Feng Z, Yang Z, Peng M, and Xu S

Abstract

Based on a self-injection locking scheme and the nonlinear amplification effect of a semiconductor optical amplifier, a low intensity noise amplified ultrashort cavity single-frequency fiber laser at 978 nm is demonstrated with a final output power of > 230 mW and a broad temperature range of > 15 °C for single-longitudinal-mode operation. The effective cavity length of the fiber oscillator is less than 6 mm, comprising a 3.5-mm-long highly Yb 3+ -doped phosphate fiber and a pair of fiber Bragg gratings. For the frequency range from 1.8 to 10 MHz, the relative intensity noise close to -150 dB/Hz is achieved. The signal-to-noise ratio of > 68 dB and the laser linewidth of < 10 kHz are obtained. Such narrow linewidth low noise 978 nm laser is promising, as the high-performance pump source or the efficient blue and UV light sources after nonlinear frequency conversion.

Published
2017
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25. Superbroad near to mid infrared luminescence from closo-deltahedral Bi5(3+) cluster in Bi5(GaCl4)3.

Author

Cao R, Peng M, Zheng J, Qiu J, and Zhang Q

Abstract

Closo-deltahedral Bi(5)(3+) cluster in Bi(5)(GaCl(4))(3), which can be synthesized in benzene by oxidizing bismuth metal either with BiCl(3) or GaCl(3), respectively, can absorb ultraviolet, visible and infrared lights, and luminesce superbroadly in near to mid infrared (NMIR) spectral range from 1 to 3μm at room temperature. Slight geometry change of the cluster can lead to the redshift of emission peak. These observations may initialize the development of Bi-based NMIR light sources with superbroad emission spectrum, where Bi(5)(3+) or similar polycationic species act as activators. Disputable crystal structure of Bi(5)(GaCl(4))(3) was redefined by classic Rietveld refining analysis. Consistent with crystallographic data, excitation, emission, temporal decay and time-resolved infrared emission spectra all reveal only one type of luminescent centers, viz. Bi(5)(3+), in the compound. And a new absorption of Bi(5)(3+) was found at ~1100nm.

Published
2012
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26. Superbroad near-to-mid-infrared luminescence from Bi5(3+) in Bi5(AlCl4)3.

Author

Cao R, Peng M, Wondraczek L, and Qiu J

Subjects
Infrared Rays, Materials Testing, Bismuth chemistry, Bismuth radiation effects, Luminescence
Abstract

Superbroad near-to-mid infrared (NIR-MIR) photoluminescence was observed from Bi5(AlCl4)3 at room temperature, spanning the spectral range of about 1000 to 4000 nm. On the basis of structural considerations and dynamic analyses, Bi5(3+) clusters were identified as the optically active species, inherently differing from the species which is typically believed to be active in NIR-emitting Bi-doped glasses. In comparison to most other NIR-luminescent Bi-doped materials, the MIR-part of the luminescence spectrum is still present at room temperature. Emission intensity and excited state lifetime were found to exhibit abnormal temperature dependence, where the former increases with temperature up to a critical value of about 150 K. This behavior is related to a temperature-dependent overlap between ground state and excited states. The observed stabilization of MIR photoemission at room temperature may be a starting point for the development of Bi-based NIR-MIR light sources with superbroad emission spectrum, where Bi5(3+) or similar polycationic species act as optical gain medium.

Published
2012
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