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 |
199 | 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" |
198 | July 10 (Wed.), 04:00 PM- | Academic Cltural Complex (E9) 5층 스카이라운지 | Prof. Sidney Nagel/Young-Kee Kim |
Public Lectures
![]() |
197 | 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 |
196 | Jun. 1(Wed) 10:30 AM | BK21 Conference Room (#1318, E6-2) | Dr. Noriaki Horiuchi, Editor, Nature Photonics | Welcome to Nature Photonics |
195 | 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
![]() |
194 | 2015/03/13, 2PM | Connect Room, KI Bldg. |
The 15th Innovative Workshop on Soft/Bio Materials
![]() | |
193 | 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 |
192 | 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 |
191 | 2015/07/23,1:30PM | E4, B401 | Prof. Gilles Lérondel (Univ. of Technology of Troyes) |
Enhanced ZnO based UV photonics and related applications
![]() |
190 | Nov. 22th (Thur), 15:00 | E6 Room(#1323) | Prof. Suprijadi Haryono |
Experimental and Computational Study on Physical Properties based on Granular System
![]() |
189 | May. 8th (Wed), 16:00 | E6 Room(#1323) | Jieun Lee |
Imaging valley dependent electron transport in 2D semiconductors
![]() |
188 | August. 16th (Fri), 14:00 | E6 Room(#1323) | Jinxing Zhang |
Multiferroic and Magnetoelectric Effects by Tailoring Interfacial Chemistry and Physics in Correlated Oxides
![]() |
187 | August. 1st (Thu), 14:00 | E6 Room(#1323) | Hyeok Yoon |
Low-density Superconductivity in SrTiO3 Probed by Planar Tunneling Spectroscopy
![]() |
186 | August. 6th (TUE), 14:00 | E6 Room(#1323) | Kanghyun Chu |
Visualization of in-plane piezoresponse vector fields
![]() |
185 | July 8(Mon), 14:00 | E6, #1322 | T. L. M. Guedes (Univ. of Konstanz) |
Ultrabroadband squeezed pulses and their relation to relativity
![]() |
184 | 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] |
183 | 2009/02/23-05/04 | E6, 1501 | 안종현교수(성균관대) 외 |
Physics Colloquium : 2009 Spring
![]() |
182 | 2009/09/07-11/30 | E6, 1501 | 이주영박사(KIAS) 외 |
Physics Colloquium : 2009 Fall
![]() |
181 | 2009/10/21, 4PM | E6, 1501 | 최석봉교수(서울대) | Interdimensional Universality of Dynamic Interfaces |
180 | 2010/02/08-05/03 | E6, 1501 | 최인수교수(서울대) 외 |
Physics Ciolloquium : 2010 Spring
![]() |