Dr. Yajun Li Profile

Dr. Yajun Li

Principal Optical Engineer

SPIE Involvement:

Author

SPIE Press Book | 4 February 2022

Elements of Optical and Laser Beam Scanning: Modeling of Mirror and Prism Scanning Devices

Yajun Li

KEYWORDS: Prisms, Mirrors, Scanners, Polygon scanners, Laser scanners, Optical scanning systems, 3D scanning, Reflection, Geometrical optics, Computer programming

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Elements of Optical and Laser Beam Scanning: Modeling of Mirror and Prism Scanning Devices

SPIE Journal Paper | 1 October 2008

Performance analysis of laser projection systems of different configurations

Yajun Li

OE, Vol. 47, Issue 10, 104301, (October 2008) https://doi.org/10.1117/12.10.1117/1.3005383

KEYWORDS: Mirrors, Projection systems, Image resolution, Optical scanning systems, Optical engineering, Lithium, Modulation, Laser beam propagation, Beam steering, RGB color model

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Proceedings Article | 27 February 2007 Paper

Lifetime prediction of diode lasers with different aging behavior

Yajun Li

Proceedings Volume 6485, 648519 (2007) https://doi.org/10.1117/12.713935

KEYWORDS: Semiconductor lasers, Reliability, Data modeling, Aluminium gallium indium phosphide, Zinc, Hydrogen, Laser development, Manufacturing, Resistance, Epitaxy

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Proceedings Article | 31 August 2005 Paper

Lifetime estimation of InGaAlP lasers under different operating conditions

Yajun Li

Proceedings Volume 5878, 58780Q (2005) https://doi.org/10.1117/12.613917

KEYWORDS: Semiconductor lasers, Manufacturing, Aluminium gallium indium phosphide, Laser manufacturing, Data modeling, Failure analysis, Reliability, Technetium, Resistance, Statistical modeling

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Proceedings Article | 24 August 2005 Paper

Gaussian to annular beam shaping

Yajun Li

Proceedings Volume 5876, 587609 (2005) https://doi.org/10.1117/12.613186

KEYWORDS: Gaussian beams, Beam propagation method, Diffraction, Beam shaping, Wave propagation, Superposition, Free space, Wavefronts, Lithium, Free space optics

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Proceedings Article | 29 September 2004 Paper

Beam shaping by superposition of fundamental mode Gaussian beam

Yajun Li

Proceedings Volume 5525, (2004) https://doi.org/10.1117/12.549586

KEYWORDS: Gaussian beams, Superposition, Beam propagation method, Beam shaping, Wave propagation, Free space, Bessel beams, Nondiffracting beams, Americium, Lithium

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SPIE Journal Paper | 1 September 2003

Effect of edge rounding and sloping of sidewalls on the readout signal of the information pits on optical disks

Yajun Li, Hungte Lee, Emil Wolf

OE, Vol. 42, Issue 09, (September 2003) https://doi.org/10.1117/12.10.1117/1.1596938

KEYWORDS: Gaussian beams, Diffraction, Objectives, Optical discs, Optical engineering, Reflection, Wavefronts, Optics manufacturing, Bessel functions, Photoresist materials

SPIE Journal Paper | 1 April 1994

Optimum focusing of Gaussian laser beams: beam waist shift in spot size minimization

Yajun Li, Joseph Katz

OE, Vol. 33, Issue 04, (April 1994) https://doi.org/10.1117/12.10.1117/12.158232

KEYWORDS: Gaussian beams, Laser systems engineering, Wavefronts, Lithium, Optical engineering, Optical design, Laser optics, Electromagnetism, Spherical lenses, Wave propagation

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SPIE Journal Paper | 1 April 1993

Accurate approximation of the focal shift in the transformation of truncated Gaussian beams

Yajun Li

OE, Vol. 32, Issue 04, (April 1993) https://doi.org/10.1117/12.10.1117/12.61196

KEYWORDS: Gaussian beams, Spherical lenses, Lithium, Diffraction, Optical engineering, Wavefronts, Error analysis, Solids, Visualization, Neon

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Proceedings Article | 1 September 1990 Paper

Applications of moment invariants to neural computing for pattern recognition

Francis Yu, Yajun Li

Proceedings Volume 1297, (1990) https://doi.org/10.1117/12.21324

KEYWORDS: Binary data, Pattern recognition, Image processing, Signal processing, Neural networks, Information operations, Computer programming, Mechanics, Oxygen, Neurons

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Showing 5 of 10 publications

Conference Committee Involvement (2)

Laser Beam Shaping VI

1 August 2005 | San Diego, California, United States

Laser Beam Shaping V

5 August 2004 | Denver, Colorado, United States

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