Zobrazeno 1 - 10
of 110
pro vyhledávání: '"Hua Her"'
Autor:
Joel M. Solomon, Sabeeh Irfan Ahmad, Arpit Dave, Li-Syuan Lu, Fatemeh HadavandMirzaee, Shih-Chu Lin, Sih-Hua Chen, Chih-Wei Luo, Wen-Hao Chang, Tsing-Hua Her
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022)
Abstract Laser direct writing is an attractive method for patterning 2D materials without contamination. Literature shows that the ultrafast ablation threshold of graphene across substrates varies by an order of magnitude. Some attribute it to the th
Externí odkaz:
https://doaj.org/article/2adcc9cdcfec4378a1b50a579df2a2a0
Autor:
Joel M. Solomon, Sabeeh Irfan Ahmad, Arpit Dave, Li-Syuan Lu, Yu-Chen Wu, Wen-Hao Chang, Chih-Wei Luo, Tsing-Hua Her
Publikováno v:
AIP Advances, Vol 12, Iss 1, Pp 015217-015217-6 (2022)
Transition metal dichalcogenides are known to possess large optical nonlinearities, and driving these materials at high intensities is desirable for many applications. Understanding their optical responses under repetitive intense excitation is essen
Externí odkaz:
https://doaj.org/article/44def45f54924fda9aa0549507e52571
Publikováno v:
Optics Express. 31:20092
We develop a theory of refractive index tuning for symmetry-protected optical bound states (SP-BICs) in high-contrast gratings (HCGs). A compact analytical formula for tuning sensitivity is derived and verified numerically. We also discover a new typ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16ae0692b66b39497fc2c48766c5351b
https://doi.org/10.1364/oe.488596
https://doi.org/10.1364/oe.488596
Publikováno v:
AIP Advances, Vol 6, Iss 12, Pp 125206-125206-6 (2016)
We report comprehensive analysis of output characteristics of homogeneously broadened index-antiguided slab lasers with transverse mode competition. Robust single fundamental mode operation is achieved when the distributive modal loss due to index an
Externí odkaz:
https://doaj.org/article/7dfcf59135174c9ba66885a7a30c786e
Autor:
Sabeeh Irfan Ahmad, Joseph A. Obeid, Joel M. Solomon, Li-Syuan Lu, Yu-Chen Wu, Wen-Hao Chang, Chih-Wei Luo, Tsing-Hua Her
Publikováno v:
Conference on Lasers and Electro-Optics.
Two pulse ablation experiments were conducted on monolayer MoS2 with various substrates. The hole size variation is explained via bandgap renormalization and carrier relaxation for different pulse separations.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff1a7474585d31fb50df21add58526bb
https://doi.org/10.1364/cleo_at.2022.jth3a.6
https://doi.org/10.1364/cleo_at.2022.jth3a.6
Autor:
Sabeeh Irfan Ahmad, Joel M. Solomon, Arpit Dave, Li-Syuan Lu, Yu-Chen Wu, Wen-Hao Chang, Chih-Wei Luo, Tsing-Hua Her
Publikováno v:
Conference on Lasers and Electro-Optics.
Multi-shot ablation studies of monolayer MoS2 and WS2 reveal the record optical robustness of these materials where optical damage results in laser-induced vacancies that greatly affect their optical properties.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8c08d2d650336710580c267e6bd1624
https://doi.org/10.1364/cleo_si.2022.sf4k.2
https://doi.org/10.1364/cleo_si.2022.sf4k.2
Autor:
Tsing-Hua Her, Zeba Naqvi
Light scattering patterns are commonly used in industry to assess fiber quality. In this work, scattering patterns of Bragg fibers are studied. Optical fibers are coated with alternating layers of Silicon Nitride and Silica using Plasma Enhanced Chem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::909ba76d0ad0ba6aaf184bc316fa0d8d
https://doi.org/10.21203/rs.3.rs-879365/v1
https://doi.org/10.21203/rs.3.rs-879365/v1
Autor:
Tsing-Hua Her, Hsin Yu Yao
Publikováno v:
Conference on Lasers and Electro-Optics.
We develop a theory for Fano resonance tuning in dual-mode high-contrast gratings (HCGs). Compact analytical formulas of tuning sensitivity are derived and verified numerically, and are in good agreement with reported experiments. We show that the re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8cfb3c9c7017c714ac42e49bd31942cb
https://doi.org/10.1364/cleo_at.2021.jw1a.15
https://doi.org/10.1364/cleo_at.2021.jw1a.15
Autor:
Tsing-Hua Her, Hsin-Yu Yao
This supplement contains detailed derivations and additional examples of tuning of Fano resonances in HCGs.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be4ff28707f17c3de67381b2d70bdf95
Publikováno v:
Conference on Lasers and Electro-Optics.
Avalanche ionization is shown to be the dominant carrier generation mechanism in the ultrafast ablation of transition metal dichalcogenides. Carrier densities reaching 22% of the total valence band population are needed for ablation to occur.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4381f14476093d14528dcf5da489f75
https://doi.org/10.1364/cleo_si.2021.sw3h.1
https://doi.org/10.1364/cleo_si.2021.sw3h.1