Search Results - chunlei+guo

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A Convenient Metal-Based Interferometric Autocorrelation Technique
ApplicationThis disclosure is the continuation of an earlier invention which describes a technique for temporally characterizing ultra short (femtosecond) laser pulses, using a metal-based second-order autocorrelation technique.AdvantagesIn this disclosure, further proof has been presented to confirm the previously shown advantages of the technique...
Published: 4/25/2019   |   Inventor(s): Chunlei Guo
Keywords(s):  
Category(s): Optics
A Dispersion-Free, Automatically Phase-Matched, and Broad Spectral-Band Femtosecond Autocorrelation Technique
The technique uses second harmonic generated (SHG) autocorrelation from metal surfaces to characterize the femtosecond laser pulses.Applications:This invention offers a technique to temporally characterize ultra short (femtosecond) laser pulses. It is simple in its design and has very broad spectral bandwidth.Advantages:Most current techniques rely...
Published: 4/25/2019   |   Inventor(s): Chunlei Guo
Keywords(s):  
Category(s): Optics
Method for Nano-Structuring Metal Surfaces by Femto-Second Laser Machining
This is a process using a femto-second laser, which produces nanostructures with high surface area on metals such as Ti, Pt, Au, Cu, Al, W. The method can dramatically alter the surface reflectivity rendering the metals black, or can be controlled to produce unexpected colors. For example, platinum and aluminum can be made to appear gold, gray, or black.Applications:The...
Published: 6/17/2009   |   Inventor(s): Chunlei Guo, Anatoliy Vorobyev, Vladimir Makin
Keywords(s):  
Category(s): Optics, Materials, Nanotechnology