Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Ioulia B. Zotova"'
Publikováno v:
Journal of Nonlinear Optical Physics & Materials. 20:249-270
We review the recent progress made by our group on power scaling of THz waves and the development of compact and portable THz sources. By reversely stacking GaP plates, we were able to improve the photon conversion efficiency from 25% to 40%, which i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55cde0bab204566190a5b6f1e93396c8
https://doi.org/10.1142/s0218863511006078
https://doi.org/10.1142/s0218863511006078
Autor:
Ioulia B. Zotova, Nils C. Fernelius, G. Pabst, Yujie J. Ding, Krishna C. Mandal, Alket Mertiri, Guan Sun, Guibao Xu
Publikováno v:
Optics Communications. 284:2027-2030
Following our measurements and analysis made on several GaSe crystals, we demonstrated that terahertz (THz) generation from ultrafast laser pulses can be developed into a sensitive technique for investigating symmetries of second-order nonlinear susc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45b0f4f0fff1461cd1721bea787ef2f8
https://doi.org/10.1016/j.optcom.2010.12.025
https://doi.org/10.1016/j.optcom.2010.12.025
Publikováno v:
Chinese Optics Letters. 9:110004-110013
The progress achieved on power scaling and compact and portable THz sources is reviewed. By reversely stacking the GaP plates, the photon conversion efficiency is improved from 25% to 40% which corresponds to the maximum value. When the number of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::219ac97520ae520f869cfafaed6ff6c5
https://doi.org/10.3788/col201109.110004
https://doi.org/10.3788/col201109.110004
Autor:
Yujie J. Ding, Ioulia B. Zotova, Nils C. Fernelius, R Roy, Krishna C. Mandal, G. Pabst, Alket Mertiri, Guan Sun, Guibao Xu
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 17:30-37
Terahertz (THz) radiation generated by ultrafast laser pulses focused on each monoclinic semiconductor crystal, i.e., GaTe, exhibits unique features. By systemically measuring the dependence of the THz output on the ultrafast pump pulses, in terms of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c21d05008fc4b4cb0f7e24ec86f09f22
https://doi.org/10.1109/jstqe.2010.2046628
https://doi.org/10.1109/jstqe.2010.2046628
Publikováno v:
Optics Communications. 283:1905-1908
We report our results on effective third-harmonic generation (THG) by cascading quasi-phase-matched second-harmonic and sum-frequency generation in a dual-period-periodically-poled KTP crystal. Significant improvement of the output powers were achiev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a74471612bab8bcce0b1cef4ff92038
https://doi.org/10.1016/j.optcom.2009.12.037
https://doi.org/10.1016/j.optcom.2009.12.037
Publikováno v:
Journal of Nonlinear Optical Physics & Materials. 19:33-55
We review our recent progress on power scaling of THz pulses generated from several nonlinear-optical crystals. By using a high-resistivity GaP crystal, we have significally increased the output peak power to as high as 722 W. By stacking three GaP w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9081a6d82f97e88fa7f10de92541b2d
https://doi.org/10.1142/s0218863510005121
https://doi.org/10.1142/s0218863510005121
Publikováno v:
Applied Physics B. 99:629-632
We efficiently generated ultrafast coherent ultraviolet radiation based on secondharmonic generation in periodically-poled KTiOPO 4 with the shortest period of 2.55 µm. The highest output power was measured to be 20.1 mW at 377.1 nm.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc6cbcdccea5a93ef24e42d0ba8bff06
https://doi.org/10.1007/s00340-009-3889-x
https://doi.org/10.1007/s00340-009-3889-x
Publikováno v:
Optics Communications. 282:4136-4140
Frequency upconversion of laser pulses at 10.26 μm to those at 1.187 μm was achieved in the presence of Nd:YAG laser pulses based on difference-frequency generation in a 10 mm-long GaSe crystal. The highest power conversion efficiency for the param
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7b00a8a962d51ba24850dc90d3d6ead
https://doi.org/10.1016/j.optcom.2009.07.021
https://doi.org/10.1016/j.optcom.2009.07.021
Publikováno v:
Journal of Nonlinear Optical Physics & Materials. 16:427-455
We have reviewed mechanisms for the efficient conversion of the broadband terahertz (THz) pulses from ultrafast laser pulses propagating in semiconductor electro-optic materials. By measuring the behaviors of the THz output versus the pump beam in te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d8414e9e913a32fa08abc1db891d426
https://doi.org/10.1142/s0218863507003822
https://doi.org/10.1142/s0218863507003822
Autor:
Yujie J. Ding, Ioulia B. Zotova
Publikováno v:
Journal of Nonlinear Optical Physics & Materials. 11:75-97
We have considered feasibilities of using optical parametric oscillation and amplification, and difference-frequency generation for efficiently generating and amplifying terahertz waves in several second-order nonlinear optical materials. They includ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc6937d40e8b7714a9e5c8a0fe82d312
https://doi.org/10.1142/s0218863502000857
https://doi.org/10.1142/s0218863502000857