Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Kyungduk Kim"'
Autor:
Kyungduk Kim, Stefan Bittner, Yuhao Jin, Yongquan Zeng, Stefano Guazzotti, Ortwin Hess, Qi Jie Wang, Hui Cao
Publikováno v:
APL Photonics, Vol 7, Iss 5, Pp 056106-056106-9 (2022)
The ray dynamics of optical cavities exhibits bifurcation points: special geometries at which ray trajectories switch abruptly between stable and unstable. A prominent example is the Fabry–Perot cavity with two planar mirrors, which is widely emplo
Externí odkaz:
https://doaj.org/article/3e89821a913941248deea3ca7e958a28
Publikováno v:
New Journal of Physics, Vol 22, Iss 8, p 083002 (2020)
We present experimental and numerical studies of broad-area semiconductor lasers with chaotic ray dynamics. The emission intensity distributions at the cavity boundaries are measured and compared to ray tracing simulations and numerical calculations
Externí odkaz:
https://doaj.org/article/e0edf495a20245b7b09f656b2e23b412
Publikováno v:
Healthcare Informatics Research, Vol 20, Iss 3, Pp 231-235 (2014)
ObjectivesThis paper describes a mobile Electronic Medical Record (EMR) platform designed to manage and utilize the existing EMR and mobile application with optimized resources.MethodsWe structured the mEMR to reuse services of retrieval and storage
Externí odkaz:
https://doaj.org/article/6e0aa0d79a624eb4854a31390fc3a5f7
Lima\c{c}on-shaped microdisk lasers are promising on-chip light sources with low lasing threshold and unidirectional output. We conduct an experimental study on the lasing dynamics of Lima\c{c}on-shaped semiconductor microcavities. The edge emission
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0dba7c2527258ade0889c855a4e88551
http://arxiv.org/abs/2211.00203
http://arxiv.org/abs/2211.00203
Publikováno v:
Optics Express. 31:11966
We propose and experimentally demonstrate parallel LiDAR using random intensity fluctuations from a highly multimode laser. We optimize a degenerate cavity to have many spatial modes lasing simultaneously with different frequencies. Their spatio-temp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c52a2fba439b68f4f716813c7a475652
https://doi.org/10.1364/oe.486348
https://doi.org/10.1364/oe.486348
Autor:
Kyungduk Kim, Ortwin Hess, Stefan Bittner, Stefano Guazzotti, Hui Cao, Yongquan Zeng, Qi Jie Wang
Publikováno v:
Science
Science, American Association for the Advancement of Science, 2021, 371 (6532), pp.948-952. ⟨10.1126/science.abc2666⟩
Science, American Association for the Advancement of Science, 2021, 371 (6532), pp.948-952. ⟨10.1126/science.abc2666⟩
Laser-based generation of random numbers The security of our digital networks is underpinned by the ability to generate streams of random numbers or bits. As networks expand in an ever-connected way, the challenge is to increase the generation rate o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::01e069fe9bfb4560cec48ac148587f17
https://doi.org/10.1126/science.abc2666
https://doi.org/10.1126/science.abc2666
Autor:
Kyungduk Kim, Stefan Bittner, Yongquan Zeng, Stefano Guazzotti, Ortwin Hess, Qi Jie Wang, Hui Cao
Publikováno v:
Laser Resonators, Microresonators, and Beam Control XXIV.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5636f7ef057695c2b711882d3289f468
https://doi.org/10.1117/12.2606219
https://doi.org/10.1117/12.2606219
Autor:
Kyungduk Kim, Stefan Bittner, Yongquan Zeng, Stefano Guazzotti, Ortwin Hess, Qi Jie Wang, Hui Cao
Publikováno v:
Conference on Lasers and Electro-Optics.
We employ spatio-temporal interference of many lasing modes for ultrafast, scalable random number generation. The laser diode with a specially-designed cavity produces hundreds of bitstreams at a total rate of two orders-of-magnitude faster than stat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53cbf76201eea883e5615117479d5461
https://doi.org/10.1364/cleo_at.2022.aw4m.1
https://doi.org/10.1364/cleo_at.2022.aw4m.1
Autor:
Kyungduk Kim, Stefan Bittner, Yuhao Jin, Yongquan Zeng, Stefano Guazzotti, Ortwin Hess, Qi Jie Wang, Hui Cao
Publikováno v:
Conference on Lasers and Electro-Optics.
We experimentally demonstrate that a slight modification of the Fabry-Perot cavity geometry has a profound impact on lasing performance. The near-planar cavity laser supports hundreds of transverse lasing modes with directional and stable output.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b2ac3a475d816495ce51deedc6065ad
https://doi.org/10.1364/cleo_at.2022.jth3a.34
https://doi.org/10.1364/cleo_at.2022.jth3a.34
Autor:
Yongquan Zeng, Kyungduk Kim, Stefan Bittner, Stefano Guazzotti, Hui Cao, Qi Jie Wang, Ortwin Hess
Publikováno v:
2021 27th International Semiconductor Laser Conference (ISLC).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab7324fa9a6f6aa43bce73adfab35398
https://doi.org/10.1109/islc51662.2021.9615684
https://doi.org/10.1109/islc51662.2021.9615684