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Your search keyword '"Byoung-Uk Sohn"' showing total 4 results
Start Over Author "Byoung-Uk Sohn" Journal nonlinear optics (nlo)
4 results on '"Byoung-Uk Sohn"'

1. Nonlinear optical properties of ultra-silicon-rich nitride

Author

Doris K. T. Ng, Byoung-Uk Sohn, Ju Won Choi, and Dawn T. H. Tan

Subjects
Range (particle radiation), Materials science, Silicon, business.industry, Physics::Optics, chemistry.chemical_element, Nonlinear refractive index, 02 engineering and technology, Nitride, 021001 nanoscience & nanotechnology, 01 natural sciences, 010309 optics, Nonlinear optical, chemistry, Attenuation coefficient, 0103 physical sciences, Optoelectronics, 0210 nano-technology, business, Absorption (electromagnetic radiation), Refractive index
Abstract

Nonlinear optical properties of ultra-silicon-rich nitride are investigated. The nonlinear refractive index and two-photo and three-photon absorption coefficients are measured in the range of 0.8pm-1.6pm covering the C- and L-bands.

Published
2019
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2. Temporal and spectral compression using two-stage nonlinear integrated systems on ultra-silicon-rich nitride

Author

Dawn T. H. Tan, Doris K. T. Ng, George F. R. Chen, Ezgi Sahin, Ju Won Choi, and Byoung-Uk Sohn

Subjects
Waveguide (electromagnetism), Materials science, business.industry, Physics::Optics, 02 engineering and technology, Nitride, Grating, 021001 nanoscience & nanotechnology, 01 natural sciences, 010309 optics, Pulse compression, Compression (functional analysis), 0103 physical sciences, Dispersion (optics), Chirp, Optoelectronics, Physics::Atomic Physics, 0210 nano-technology, business, Self-phase modulation
Abstract

We demonstrate pulse compression using ultra-silicon-rich nitride grating devices. Frequency chirp from a waveguide is temporally synchronized by a dispersive grating to achieve temporal compression by a factor of 4.3. When reversed, spectral compression of 2.3× is achieved.

Published
2019
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3. Observation of eleven-photon absorption and four-photon absorption excited photoluminescence in GeSbS chalcogenide glass

Author

Byoung-Uk Sohn, Dawn T. H. Tan, Kathleen Richardson, Myungkoo Kang, Anuradha M. Agarwal, and Ju Won Choi

Subjects
Photoluminescence, Photon, Materials science, business.industry, Physics::Optics, Chalcogenide glass, 02 engineering and technology, 021001 nanoscience & nanotechnology, Condensed Matter::Disordered Systems and Neural Networks, 01 natural sciences, 010309 optics, Light intensity, Attenuation coefficient, Excited state, 0103 physical sciences, Optoelectronics, 0210 nano-technology, business, Absorption (electromagnetic radiation), Refractive index
Abstract

The nonlinear optical properties of GeSbS chalcogenide glass are characterized in the wavelength range from 1.1-5.5μm. High order multi-photon up to the 11th order, multiphoton induced photoluminescence and nonlinear refractive indices are experimentally measured.

Published
2019
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4. Sub-ps optical pulse compression in ultra-silicon-rich nitride waveguides

Author

Byoung-Uk Sohn, Dawn T. H. Tan, Ju Won Choi, Doris K. T. Ng, and George F. R. Chen

Subjects
Materials science, business.industry, Physics::Optics, Soliton (optics), 02 engineering and technology, Nitride, 021001 nanoscience & nanotechnology, Laser, 01 natural sciences, Pulse (physics), law.invention, 010309 optics, Pulse compression, law, Fiber laser, 0103 physical sciences, Dispersion (optics), Optoelectronics, 0210 nano-technology, Self-phase modulation, business
Abstract

We demonstrate the optical pulse compression of 2ps laser down to 230fs pulse resulting in 8.7 times compressed using a USRN waveguide. The process is facilitated by high-order soliton formation arising from a large nonlinear parameter and anomalous group velocity dispersion.

Published
2019
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