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 |
226 | Dec. 9(Fri), 4p.m. | #1323(E6-2. 1st fl. | Dr. Kun Woo Kim, KIAS | Shift Charge and Spin Photocurrents in Dirac Surface States of Topological Insulator |
225 | 2015/12/11, 1:30PM | E6-2, #1323 | Dr. KwangYong Choi (Chung-Ang University) | Quantum spin liquid in the 1/3 depleted triangular lattice Ba3(Ru1-xIrx)Ti2O9 |
224 | 2016/03/11 1:30 PM | E6-2. 1st fl. #1501 | Dr. Kwon Park | Topological phases of matter in nonequilibrium: Topology of the Wannier-Stark ladder |
223 | November 1 (Thu.), 16:00 PM | #1323, E6-2 | Dr. KyeoReh Lee |
Direct holography from a single snapshot
![]() |
» | 2015/07/16, 4PM | E6-2, 1318 | Dr. Kyunghan Hong(MIT) | Next-generation ultrafast laser technology for nonlinear optics and strong-field physics |
221 | October 26 (Fri.), 4:00 PM | #1323, E6-2 | Dr. Kyusung Hwang |
Coexisting triple-point and nodal-line topological magnons and thermal Hall effect in pyrochlore iridates
![]() |
220 | Mar. 24 (Fri.), 2:30 PM | #1323 (1st fl. E6-2). | Dr. MahnSoo Choi | Topological Dynamics |
219 | 2015/10/15, 10AM | E6-2, 5th fl. #5318 | Dr. Mark D. Bird (Florida State University) | Development of Large-Bore, High Field Magnets at the NHMFL |
218 | May 19, 2016 (Thur.) 3PM | May 19, 2016 (Thur.) 3PM, | Dr. Michael Betz, CERN | The CERN Resonant WISP Search: Development, Results and Lesson-Learned |
217 | Jul. 08 (Fri.) 11:00 AM | #1323(E6-2. 1st fl.) | Dr. Michael Lawler(Binghampton Univ. / Cornell Univ.) | Isostatic magnetism |
216 | 2015/11/23, 1:30PM | E6-2, #1323 | Dr. Michael Park (Stanford University) | What's Beyond the Standard Model? Lessons from Run I and what might come in Run II |
215 | Feb. 1 (Wed.), 2p.m. | #1323(E6-2. 1st fl.) | Dr. Michihisa Yamamoto, Department of Applied Physics, The University of Tokyo | Quantum electron optics using flying electrons |
214 | Sep. 10 (Tue.), 03:00 PM | E6-2. 1st fl. #1323 | Dr. Mikhail Kiselev |
Two-Stage Kondo Effect
![]() |
213 | Nov. 3 (Fri.), 2:30 PM | #1323 (1st fl., E6-2.) | Dr. MinChul Lee(Department of Applied Physics, Kyung Hee Univ.) |
Quantum Resistor-Capacitor Circuit with Majorana Edge States
![]() |
212 | July 30 (Tue), 4:00 PM | #1323, E6-2 | Dr. Mingu Kang |
Dirac fermions and flat bands in correlated kagome metals
![]() |
211 | Apr. 28 (Fri.), 04:00 PM | #1323 (E6-2. 1st fl.) | Dr. Minkyung Jung Research Institute, DGIST | Carbon nanotubes coupled to superconducting impedance matching circuits |
210 | Sep. 29 (Thu), 4:00 PM | E6-2. #2501(2nd fl.) | Dr. Minu Kim, Institute for Basic Science, Seoul National University | Exploring the phase diagram of BaBiO3: epic voyage of just another bad trip? |
209 | 3 PM, 12 Jun (Wed), 2019 | Rm# 1323, E6-2 | Dr. Minyoung You |
The relation between free and interacting fermionic SPT phases
![]() |
208 | April 26 (Tue), 4PM | #1323(1st Floor. E6-2) | Dr. Myung-Ho Bae, Korea Research Institute of Standards and Science | Transport spectroscopy for electronic bands in carbon-based nanomaterials with weak-bond contacts |
207 | May. 11 (Fri.), 04:00 PM | E6-2. 1st fl. #1323 | Dr. Nam Kim |
암페어 단위 재정의와 단전자 펌프 소자 개발
![]() |