Next-generation ultrafast laser technology for nonlinear optics and strong-field physics
2015.07.13 14:20
장소 | E6-2, 1318 |
---|---|
일시 | 2015/07/16, 4PM |
연사 | Dr. Kyunghan Hong(MIT) |
Next-generation ultrafast laser technology for nonlinear optics and strong-field physics
2015/7/16 (Thurs) 4PM, Rm 1318 (Faculty Conference Rm.)
Femtosecond high-power Ti:sapphire chirped-pulse amplification (CPA) laser technology at 800 nm of wavelength has been widely and almost exclusively used over last two decades for studying ultrafast nonlinear optics and strong-field phenomena. Recently ultrafast optical parametric chirped-pulse amplification (OPCPA) technology has made a rapid progress, so that various wavelengths are available at high intensities. The wavelength selectivity provides interesting opportunities in ultrafast nonlinear optics and strong-field phenomena driven especially at mid-infrared (MIR) wavelengths. High-harmonic generation (HHG) driven by MIR wavelengths has been proven to be a reliable way to achieve a tabletop coherent water-window soft X-ray (280-540 eV) or keV source. On the other hand, the super-continuum generation (SCG) in the MIR range is highly useful for detecting biomedical materials and air pollutants with the resonant fingerprints of the common molecules, such as H2O, CO2, CO, and NH4. The highly nonlinear laser filamentation process enables the SCG in bulk dielectrics and gases.
In this presentation, I review our recent progress on a multi-mJ MIR (2.1 m) OPCPA system operating at a kHz repetition rate, pumped by a picosecond cryogenically cooled Yb:YAG laser. Using this novel MIR source, we demonstrate high-flux soft X-ray HHG up to the water-window range. In addition, I present the MIR filamentation in dielectrics showing 3-octave-spanning SCG and sub-2-cycle self-compression. I will also discuss novel high-energy pulse synthesizer technology based on multi-color OPCPA systems. The work presented here provides an excellent platform of next-generation strong-field laser technology.
Contact: HeeKyunh Ahn, Laser Science Research Lab. Tel. 2561
댓글 0
번호 | 일시 | 장소 | 연사 | 제목 |
---|---|---|---|---|
공지 | 2019/09/18 - 12/5 | Seminar Room #1323 | Prof. David Schuster and etc. | Fall 2019: Physics Seminar Serises |
공지 | 2019/09/02 - 12/09 | Seminar Room 1501 | 이호성 박사 (한국표준과학연구원) and etc. | Fall 2019: Physics Colloquium |
139 | 2015/03/09-06/08 | E6, 1501 | 최현용교수(연세대) 외12명 |
Physics Colloquium : 2015 Spring
![]() |
138 | 2015/09/07-12/01 | E6, 1501 | 문은국 교수(KAIST) 외 |
Physics Colloquium : 2015 Fall
![]() |
137 | 2016/03/07-06/13 | E6, 1501 | Prof. David Helfman(KAIST) 외 |
Physics Colloquium : 2016 Spring
![]() |
136 | 2015/10/23-12/4 10:30 AM | E6, #1501 | Prof. YongKeun Park & Prof. Tae-Young Yoon | How to write a good scientific paper[Open lecture series] |
135 | July 8(Mon), 14:00 | E6, #1322 | T. L. M. Guedes (Univ. of Konstanz) |
Ultrabroadband squeezed pulses and their relation to relativity
![]() |
134 | Nov. 22th (Thur), 15:00 | E6 Room(#1323) | Prof. Suprijadi Haryono |
Experimental and Computational Study on Physical Properties based on Granular System
![]() |
133 | May. 8th (Wed), 16:00 | E6 Room(#1323) | Jieun Lee |
Imaging valley dependent electron transport in 2D semiconductors
![]() |
132 | August. 16th (Fri), 14:00 | E6 Room(#1323) | Jinxing Zhang |
Multiferroic and Magnetoelectric Effects by Tailoring Interfacial Chemistry and Physics in Correlated Oxides
![]() |
131 | August. 1st (Thu), 14:00 | E6 Room(#1323) | Hyeok Yoon |
Low-density Superconductivity in SrTiO3 Probed by Planar Tunneling Spectroscopy
![]() |
130 | August. 6th (TUE), 14:00 | E6 Room(#1323) | Kanghyun Chu |
Visualization of in-plane piezoresponse vector fields
![]() |
129 | 2015/07/23,1:30PM | E4, B401 | Prof. Gilles Lérondel (Univ. of Technology of Troyes) |
Enhanced ZnO based UV photonics and related applications
![]() |
128 | 2015/12/17, 11:00AM | E4(KI Building), Matrix Hall (2nd fl.) | Dr. Jung-Hoon Park (Purdue University) | Wavefront engineering for in-vivo Deep brain imaging |
127 | 2015/12/09, 11AM | E4(KI Building), Connect room (2nd fl.) | Arjun G. Yodh (University of Pennsylvania) | Functional Imaging & Monitoring of Brain & Breast with Diffuse Light |
126 | 2015/03/13, 2PM | Connect Room, KI Bldg. |
The 15th Innovative Workshop on Soft/Bio Materials
![]() | |
125 | October 15, 2020 (Thursday | CAPP Seminar Room #C303, Creation Hall (3F), KAIST Munji Campus | Prof. Gil-Ho Lee (POSTECH) |
Graphene-based Josephson junction microwave bolometer
![]() |
124 | Jun. 1(Wed) 10:30 AM | BK21 Conference Room (#1318, E6-2) | Dr. Noriaki Horiuchi, Editor, Nature Photonics | Welcome to Nature Photonics |
123 | 2015/08/04, 11PM | B501, Room Red, KI bldg. 5nd fl. | Dr. Eric Jin Ser Lee(Univ. of Manitoba, Canada) | Propagation of ultrasound through two- and three-dimensional strongly scattering media |
122 | July 10 (Wed.), 04:00 PM- | Academic Cltural Complex (E9) 5층 스카이라운지 | Prof. Sidney Nagel/Young-Kee Kim |
Public Lectures
![]() |
121 | Oct. 18 (Tue.), 1:30 PM | 1st fl. #1323(E6-2) | Dr. Chan-Ho Yang, Department of Physics, KAIST | "Visualization of oxygen vacancy in motion and the interplay with electronic conduction" |
120 | Dec. 12th (Mon) | 1:30p.m. #1323(E6-2. 1st fl.) | Dongjoon Song , AIST | “Possible symmetry in the phase diagrams of electron- & hole-doped cuprate high-Tc superconductors” |