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Your search keyword '"Wang, Ching-yue"' showing total 180 results
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180 results on '"Wang, Ching-yue"'

1. Femtosecond Laser Applications in Micro/Nano Science and Technology: Nonlinear Effects in Photonic Crystal Fibers, Femtosecond Laser-Induced Forward Transfer, and Femtosecond Laser Manipulation System for Biology

Author

Wang, Ching-Yue, Xing, Qi-Rong, Li, Yan-Feng, Hu, Ming-Lie, Yang, Li, Gong, Ji-Xian, Jia, Wei, Chai, Lu, Castleman, A. W., Jr., editor, Toennies, J. P., editor, Yamanouchi, K., editor, Zinth, W., editor, Yamanouchi, Kaoru, editor, Becker, Andreas, editor, Li, Ruxin, editor, and Chin, See Leang, editor

Published
2009
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2. Characterization of Femtosecond Optical Pulses with Wavelet Transform of Spectral Shearing Interferogram

Author

Deng, Yuqiang, Wu, Zubin, Cao, Shiying, Chai, Lu, Wang, Ching-yue, Zhang, Zhigang, Rhodes, William T., editor, Adibi, Ali, editor, Asakura, Toshimitsu, editor, Hänsch, Theodor W., editor, Kamiya, Takeshi, editor, Krausz, Ferenc, editor, Monemar, Bo, editor, Venghaus, Herbert, editor, Weber, Horst, editor, Weinfurter, Harald, editor, Watanabe, Shuntaro, editor, and Midorikawa, Katsumi, editor

Published
2007
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3. Water Vapor Absorption Spectroscopy in Terahertz Range Using Wavelet-transform Analysis

Author

Deng, Yuqiang, Xing, Qirong, Lang, Liying, Li, Shuxin, Chai, Lu, Wang, Ching-yue, Zhang, Zhigang, Rhodes, William T., editor, Adibi, Ali, editor, Asakura, Toshimitsu, editor, Hänsch, Theodor W., editor, Kamiya, Takeshi, editor, Krausz, Ferenc, editor, Monemar, Bo, editor, Venghaus, Herbert, editor, Weber, Horst, editor, Weinfurter, Harald, editor, Watanabe, Shuntaro, editor, and Midorikawa, Katsumi, editor

Published
2007
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14. Analysis and design of terahertz photonic crystal fibers by an effective-index method

Author

Li, Yanfeng, Wang, Changlei, Zhang, Ning, Wang, Ching-yue, and Xing, Qirong

Subjects
Crystal whiskers -- Design and construction, Maxwell equations -- Usage, Fiber optics -- Research, Fiber optics, Astronomy, Physics
Abstract

An effective-index method (EIM) is used to analyze and design photonic crystal fibers (PCFs) for the terahertz radiation. By building an analogy between a conventional optical fiber and a PCF, the EIM solves the effective index of the fiber cladding and the effective modal index of a PCF analytically. The EIM is first validated by comparison with available data in the reference, showing that the role of material dispersion is negligible at higher frequencies. Terahertz PCFs with flattened dispersion are designed based on this method and the scaling property of the Maxwell equations.

Published
2006

20. Pulse colliding in a self-mode-locked ring-cavity T:sapphire laser

Author

Wang, Ching-yue, Chai, Lu, Zhang, Weili, and Yoo, Kwong Mow

Subjects
Solid-state lasers -- Research, Astronomy, Physics
Abstract

A new self-mode-locked ring-cavity Ti:sapphire laser is described that is self-mode locked in both unidirectional and bidirectional operations. We found that clockwise and counterclockwise pulses collide with each other at the Ti:sapphire rod when the laser is mode locked in a bidirectional operation. Spectrum narrowing and pulse broadening were found in bidirectional rather than unidirectional mode-locked operation. This is explained by the performance of a transient grating in the gain medium that restricts oscillation to a narrow spectral range. OCIS codes: 320.5550, 140.4050, 140.3460.

Published
1998

30. Operation of Kerr-lens mode-locked Ti:sapphire laser in the non-soliton regime

Author

Li Yan-Feng, Liu Hua-Gang, Hu Ming-Lie, Song You-Jian, Chai Lu, and Wang Ching-Yue

Subjects
Materials science, Oscillation, business.industry, Ti:sapphire laser, Physics::Optics, General Physics and Astronomy, Soliton (optics), Laser, law.invention, Lens (optics), symbols.namesake, Optics, law, Dispersion (optics), Sapphire, symbols, business, Nonlinear Schrödinger equation
Abstract

A Kerr-lens mode-locked Ti:sapphire laser operating in a non-soliton regime is demonstrated. Dispersive wave generation is observed as a result of third order dispersion in the vicinity of zero dispersion. The characteristics of the Ti:sapphire laser operating in a positive dispersion regime are presented, where the oscillator directly generates pulses with duration continuously tunable from 0.37 ps to 2.11 ps, and 36 fs pulses are achieved after extracavity compression. The oscillation is numerically simulated with an extended nonlinear Schrodinger equation, and the simulation results are in good agreement with the experimental results.

Published
2010
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32. Wavelet-transform analysis of spectral shearing interferometry for phase reconstruction of femtosecond optical pulses

Author

Deng, Yuqiang, Wu, Zubin, Chai, Lu, Wang, Ching-yue, 1000050447075, Yamane, Keisaku, Morita, Ryoji, 1000010240631, Yamashita, Mikio, Zhang, Zhigang, Deng, Yuqiang, Wu, Zubin, Chai, Lu, Wang, Ching-yue, 1000050447075, Yamane, Keisaku, Morita, Ryoji, 1000010240631, Yamashita, Mikio, and Zhang, Zhigang

Abstract

We introduce a novel method for retrieving the phase from a spectral shearing interferogram, based on wavelet-transform technique. We demonstrate with both theoretical and experimental data that this technique provides an alternative and reliable technique for phase retrieval, particularly for highly structured pulse spectra.

Published
2005

41. Long range absolute distance measurement based on femtosecond laser balanced optical cross-correlation

Author

Chen Wei, Hu Ming-Lie, Wang Ching-Yue, Song You-Jian, Qin Peng, and Chai Lu

Subjects
Offset (computer science), Materials science, Cross-correlation, business.industry, Physics::Optics, General Physics and Astronomy, Laser, law.invention, Time of flight, Optics, Machining, law, Fiber laser, Femtosecond, business, Free-space optical communication
Abstract

High-precision distance measurement in a long range is critical for many advanced applications, such as satellite formation flying, free space optical communication and large scale machining. A 52 m absolute distance measurement in free space based on time of flight of femtosecond laser is demonstrated. The timing offset between target-reflected and the reference pulses is precisely characterized by balanced optical cross-correlation method. The balanced cross correlation signal is used for the feedback control of the cavity length and tightly locks the distance under test to multiple of pulse separation. As a result, the time of flight of the target-reflected pulse is determined by the repetition rate of the femtosecond laser, which effectively avoids the loss of timing resolution caused by direct access of pulse time-of-flight from photo-detection. In the experiment, a Yb -doped high repetition rate mode-locked fiber laser working at 1.04 μm is used as a femtosecond laser source, and a measurement precision of 12 nm is achieved in an average time of one second.

Published
2012
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48. Theoretical Study on a Cluster-Seven-Core Photonic Crystal Fiber with High Nonlinearity and High-Power Endurance

Author

Cheng Tong-Lei, Hu Minglie, Li Yan-Feng, Chai Lu, and Wang Ching-Yue

Subjects
Materials science, business.industry, Physics::Optics, General Physics and Astronomy, Microstructured optical fiber, Graded-index fiber, Core (optical fiber), Optics, Single-core, business, Plastic optical fiber, Multipole expansion, Photonic crystal, Photonic-crystal fiber
Abstract

We present a novel cluster-seven-core photonic crystal fiber which possesses high nonlinearity and supports the high-power pumping. Its nonlinearity coefficient and effective mode area are calculated by the full vector multipole method. Compared with the single core PCF, the cluster-seven-core photonic crystal fiber can support high-power beam transmitting in the core, and simultaneously has high nonlinearity. This kind of photonic crystal fiber can be applied to the photoelectron-device field.

Published
2010
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