Ms. Yan Lou Profile

Yan Lou

at Changchun Univ of Science and Technology

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Author

Publications (4)

Proceedings Article | 14 February 2019 Paper

Thulium doped fiber laser with a limited pulse width of 560fs

Zonghui Tao, Yan Lou, Desheng Zhao, Wangzhuo Ma, Runmin Liu, Tianshu Wang

Proceedings Volume 11048, 110483L (2019) https://doi.org/10.1117/12.2518332

KEYWORDS: Fiber lasers, Solitons, Polarization, Mode locking, YAG lasers, Light sources, Signal to noise ratio, Single mode fibers, Absorption, Wavelength division multiplexing

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Proceedings Article | 20 November 2014 Paper

Research on the intelligent control simulation target with IR imaging target for hardware-in-the-loop simulation test

Key-an Dong, Ye Gu, Yan An, Xiang-kai Meng, Yan Lou, Ya-lin Zhang, Juntong Zhan, Yan-song Song, Yan Dong, Shou-feng Tong

Proceedings Volume 9300, 93002D (2014) https://doi.org/10.1117/12.2073141

KEYWORDS: Infrared imaging, Infrared radiation, Thermography, Telecommunications, Control systems, Optical simulations, Target detection, Spatial resolution, Infrared detectors, Forward looking infrared

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Proceedings Article | 20 November 2014 Paper

Partially coherent polarized atmospheric transmission characteristics and application technology research

Qiang Fu, Duorui Gao, Zhi Liu, Chunyi Chen, Yan Lou, Huilin Jiang

Proceedings Volume 9300, 93002A (2014) https://doi.org/10.1117/12.2073129

KEYWORDS: Turbulence, Atmospheric turbulence, Gaussian beams, Polarization, Atmospheric propagation, Receivers, Global system for mobile communications, Beam controllers, Atmospheric optics, Transmittance

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Based on partially coherent polarized light transmission characteristics of the atmosphere, an intensity expression of completely coherent flashing light is derived from Andrews scale modulation method. According to the generalized Huygens-Fresnel principle and Rytov theory, the phase fluctuation structure function is obtained on condition that the refractive index profile in the atmosphere meet Von Karman spectrum, then get the arrival Angle fluctuation variance. Through the RMS beam width of gaussian beams in turbulent atmosphere, deviation angle formula of fully coherent gaussian beams in turbulence atmosphere is attained, then get the RMS beam width of partially coherent and derivation angle expression of GSM beam in turbulent atmosphere. Combined with transmission properties of radial polarized laser beam, cross spectral density matrix of partially coherent radially polarized light can be gained by using generalized huygens-fresnel principle. And light intensity and polarization after transmission can be known according to the unity of coherence and polarization theory. On the basis of the analysis model and numerical simulation, the simulation results show that: the light spot caused by atmospheric turbulence of partially coherent polarization will be superior to completely polarized light.Taking advantage of this feature, designed a new wireless suppression technology of atmospheric turbulence, that is the optimization criterion of initial degree of coherent light beam. The optimal initial degree of coherent light beam will change along with the change of atmospheric turbulence conditions,make control the beam’s initial degree of coherence to realize the initial degree of coherence of light beam in real time and dynamic control. A spatial phase screen before emission aperture of fully coherent light is to generate the partially coherent light, liquid crystal spatial light modulator is is a preferable way to realize the dynamic random phase. Finally look future of the application research of partially coherent light.

Proceedings Article | 15 October 2012 Paper

Research on simulation system with the wide range and high-precision laser energy characteristics

Ke-yan Dong, Yan Lou, Jing-yi He, Shou-feng Tong, Hui-lin Jiang

Proceedings Volume 8417, 841739 (2012) https://doi.org/10.1117/12.971198

KEYWORDS: Optical simulations, Target designation, Prisms, Weapons, Laser energy, Signal attenuation, Laser development, Absorption, Crystals, Control systems

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