visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
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.)

Dr. Kyunghan Hong, MIT

 

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

번호 일시 장소 연사 제목
공지 Sep.22 2022  E6-1 #1323    2022 가을학기 응집물리 및 광학 세미나 전체 일정
221 Jun 24 (Mon) 11:00  E6-2, #1323  Dr. Henning Schomerus  Topological photonic anomalies file
220 2015/12/09, 2PM  E6-2, #1323  Arjun G. Yodh (University of Pennsylvania)  SWELLABLE COLLOIDAL PARTICLES ARE SWELL
219 July 25(Thur.),4:00PM  E6-2, #1323  Prof.Bohm-Jung Yang  Band topology of twisted bilayer graphene file
218 2016/1/26, 2PM  E6-2, #1323  Dr. Sergei V. Kalinin (Center for Nanophase Materials Sciences, Oak Ridge National Laboratory)  Electrochemistry on Nano- and Atomic Levels: Scanning Probe Microscopy Meets Deep Data
217 Jun 28, 14:00  E6-2, #1322  Dr. Bongjae Kim, Dr. Sooran Kim, Dr. Jeongwoon Hwang  1st Research-exchange meeting of computational material physics file
216 Sep. 02(Fri) 2:30 PM  E6-2(1st fl.), #1323  Dr. Yong-Hyun Kim,Graduate School of Nanoscience and Technology, KAIST  Nanoscale Thermal Physics: Seebeck Effect and Nanoscale Friction
215 Sep. 02(Fri) 4:00 PM  E6-2(1st fl) #1323  Dr. Yong-Joo Doh, Department of Physics and Photon Science, GIST  Quantum Electrical Transport in Topological Insulator Nanowires
214 Jan. 17(Mon) - 21 (Fri), 2-4pm  E6-2 Room 2502  Dr. Donghui Jeong (Penn State University)  Five Lectures on Observational Probes of Dark Energy file
213 Nov. 12 (Thu.) 4:00 PM  E6-2 1323  김영덕 (Young Duck Kim) 교수  2020 가을학기 광학분야 특별세미나
212 Aug. 8th (Mon), 14:00  E6-2 #2502  Prof. Soonwon Choi(MIT)  Classical Shadow Tomography for Analog Quantum Simulators
211 Sep. 29th(Thu), 4PM  E6-2 #1323 (1st floor)  Dr. Sangyoon Han, Department of Physics, KAIST  Large-scale Silicon Photonic MEMS Switches
210 Nov. 11 (Fri), 11:00AM  E6-2 #1323  손창희(UNIST 물리학과 교수)  (응집물리 세미나) Honeycomb oxide heterostructures for quantum spin liquid
209 Oct. 7 (Fri), 11:00AM  E6-2 #1323  김영국(성균관대 물리학과 교수)  (응집물리 세미나) Competing orders in a vanadium-based kagome metal monolayer
208 Oct. 28 (Fri), 11:00AM  E6-2 #1323  김수란(경북대 물리교육과 교수)  (응집물리 세미나) Machine-Learning-Guided Prediction models and Materials discovery for high Tc cuprates
207 Sep. 29 (Thu), 4:00PM  E6-2 #1323  강봉주(한국화학연구원 박사)  (광학분야 세미나) Ultrafast THz Field-Induced Nonlinear Optics
206 Dec. 9 (Fri), 11:00AM  E6-2 #1323  김도헌(서울대 물리천문학부 교수)  (응집물리 세미나) Single-shot measurements of strongly-correlated artificial molecular levels in semiconductor quantum dots
205 Oct. 13 (Thu), 4:00PM  E6-2 #1323  김영진(KAIST 기계공학과 교수)  (광학분야 세미나) Ultrafast Optics for Ultra-Precision Metrology and Realization of Flexible/Stretchable Laser-Induced-Graphene Electronics
204 Sep. 23 (Fri.), 11:00AM  E6-2 #1323  이길호(포스텍 물리학과 교수)  (응집물리 세미나) Steady Floquet-Andreev states in graphene Josephson junctions file
203 Nov. 25 (Fri), 11:00AM  E6-2 #1323  이승섭(서울대 물리천문학부 교수)  (응집물리 세미나) DMFT+ NRG: From models to real materials, from local to nonlocal correlations
202 Nov. 3 (Thu), 4:00PM  E6-2 #1323  문효원(한국과학기술원연구원 박사)  (광학분야 세미나) Single-photon emission from low-dimensional materials