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+Summary:
+- Extensive experience in laser material interaction and new laser process development.
+- Experience in key component development and integration to manufacture systems.
+- Experience in project managing.
+- Communication and collaboration across different functional groups.
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+Specialties:
+Laser material interaction, process development, laser systems, beam delivery technology, project management
- Application research and development on laser material interaction and micromachining for consumer electronics, semiconductor, solid state lighting and other markets. Utilizing various lasers sources including UV, visible, near-IR and CO2 for process development including ablation, cutting, drilling, marking and etc.
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+- Optics development for fast and accurate beam delivery technology.
• Two-photon fluorescence imaging: developed a novel chromatic two-photon fluorescence imaging technique to significantly improve axial scanning speed.
+• CARS spectroscopy: demonstrated high resolution CARS spectroscopy with broadband excitation using cross-correlation frequency resolved optical gating.
+• CARS imaging: demonstrated in-line holographic CARS to achieve high speed imaging of three dimensional phenomenon.
+• Fiber laser: build up a femto-second fiber ring laser system
Expertise in nonlinear optics, electro-optical effect, and harmonic generation.
We demonstrate a simple approach for inline holographic coherent anti-Stokes Raman scattering (CARS) microscopy, in which a layer of uniform nonlinear medium is placed in front of a specimen to be imaged. The reference wave created by four-wave mixing in the nonlinear medium can interfere with the CARS signal generated in the specimen to result in an inline hologram. We experimentally and...more
In this work, a chromatic axial scanning method for two-photon excitation fluorescence imaging is presented. Effective axial scanning is achieved by incorporating a Fresnel lens in the system, which has large chromatic aberration and can therefore focus the excitation beam to different axial positions depending on its wavelength. We experimentally demonstrated this technique and used it to image...more
Time-resolved coherent anti-Stokes Raman scattering (CARS) impulsively excited by a supercontinuum (SC) is investigated. We show that it is critical to optimize the temporal overlapping of the constituent solitons of a SC in order to impulsively excite vibrational modes over a broad frequency range. The cross-correlation frequency-resolved optical gating technique is utilized to retrieve the...more
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