Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Guowen Yang"'
Autor:
Guowen Yang, Domenico Bongiovanni, Daohong Song, Roberto Morandotti, Zhigang Chen, Nikolaos K. Efremidis
Publikováno v:
APL Photonics, Vol 9, Iss 6, Pp 066115-066115-8 (2024)
The statistical mechanical behavior of weakly nonlinear multimoded optical settings has been attracting increased interest over the last few years. The main purpose of this work is to numerically investigate the main factors that affect the thermaliz
Externí odkaz:
https://doaj.org/article/d2077ded4f0a4644974193152e51b198
Autor:
Yuliang Zhao, Guowen Yang, Yongming Zhao, Song Tang, Yu Lan, Yuxian Liu, Zhenfu Wang, Abdullah Demir
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 6, Pp 1-6 (2022)
We report on studying tunnel junctions and an optical cavity structure for developing epitaxially-stacked high-efficiency 905 nm high-power laser diodes. The GaAs tunnel junctions were explored via simulations and experiments to realize a high peak c
Externí odkaz:
https://doaj.org/article/431fb452290e4c1ea0abd571a01c6894
Autor:
Yuliang Zhao, Zhenfu Wang, Abdullah Demir, Guowen Yang, Shufang Ma, Bingshe Xu, Cheng Sun, Bo Li, Bocang Qiu
Publikováno v:
IEEE Photonics Journal, Vol 13, Iss 3, Pp 1-8 (2021)
We report on the development of a 940-nm diode laser bar based on epitaxially stacked active regions by employing a tunnel junction structure. The tunnel junction and the device parameters were systematically optimized to achieve high output and powe
Externí odkaz:
https://doaj.org/article/e1c011f535624e378af214fc489396bd
Publikováno v:
Nanomaterials, Vol 12, Iss 3, p 330 (2022)
Vanadium pentoxide can undergo a reversible phase transition by heating above 260 °C; its non-thermal phase transition, as well as ultrafast dynamical processes, is still not known. Here, femtosecond laser-induced phase transition properties in V2O5
Externí odkaz:
https://doaj.org/article/427c7432e2b640d781882b509be2ca11
Autor:
Yuxian Liu, Kaveh Ebadi, Ali Kaan Sunnetcioglu, Sinan Gundogdu, Serdar Sengul, Yuliang Zhao, Yu Lan, Yongming Zhao, Guowen Yang, Abdullah Demir
Publikováno v:
Optics Express
One of the persistent obstacles for high-power laser diodes (LDs) has been the catastrophic optical mirror damage (COMD), which limits the operating power level and lifetime of commercial high-power LDs. The output facet of LD reaches a critical temp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a307273f2bde53fc3604332688f4414f
https://pubmed.ncbi.nlm.nih.gov/36242234
https://pubmed.ncbi.nlm.nih.gov/36242234
Publikováno v:
IEEE Photonics Technology Letters
Improving the power and efficiency of 9xx-nm broad-area laser diodes has a great help in reducing the cost of laser systems and expanding applications. This letter presents an optimized epitaxial structure with high power and conversion efficiency. L
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51db7f3132d0bf8c3e0841aa5ba1dd03
https://hdl.handle.net/11693/111931
https://hdl.handle.net/11693/111931
Publikováno v:
Applied Surface Science
Passivation of dangling bonds at the cleaved mirror facet and its durability are fundamental features of semiconductor lasers to obtain reliable operation with a long device lifetime. The high non-radiative recombination activity of the surface state
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd6b329cf9bc802962cd9ba2ea5e8a80
https://hdl.handle.net/11693/111277
https://hdl.handle.net/11693/111277
Autor:
Yi-dong Chang, Y.L. Liu, Yuliang Zhao, Bo Li, Guowen Yang, Yu Lan, Yu-qi Du, Zhenfu Wang, Te Li, Xiao-ying Zhang
Publikováno v:
Chinese Journal of Luminescence. 42:674-681
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b8863ee0af18b44e34fa08fc7bf8c2a
https://doi.org/10.37188/cjl.20210014
https://doi.org/10.37188/cjl.20210014
Autor:
Kaveh Ebadi, Yuxian Liu, Ali Kaan Sünnetçioglu, Sinan Gündogdu, Serdar Sengül, Yuliang Zhao, Yu Lan, Guowen Yang, Abdullah Demir
Publikováno v:
Semiconductor Lasers and Laser Dynamics X
Catastrophic optical mirror damage (COMD) limits the output power and reliability of lasers diodes (LDs). Laser self heating together with facet absorption of output power cause the facet to reach a critical temperature (Tc), resulting in COMD and ir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7de2ad41df29196592ca526a78224a6e
https://doi.org/10.1117/12.2621651
https://doi.org/10.1117/12.2621651
Publikováno v:
Nanomaterials (Basel, Switzerland). 12(3)
Vanadium pentoxide can undergo a reversible phase transition by heating above 260 °C; its non-thermal phase transition, as well as ultrafast dynamical processes, is still not known. Here, femtosecond laser-induced phase transition properties in V
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::f0828cef13b828ad9912944ba9d73e43
https://pubmed.ncbi.nlm.nih.gov/35159675
https://pubmed.ncbi.nlm.nih.gov/35159675