visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2015-07-16 16:00 
일시 2015/07/16, 4PM 
장소 E6-2, 1318 
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 날짜 장소 제목
263 2022-09-22 16:00  E6-2 #1323  (광학분야 세미나) Quasi-particle-like optical vortices in magnetic materials
262 2023-03-30 16:00  E6-2 #1323  (광학분야 세미나)Scalable quantum entanglement in trapped-ions based quantum computer
261 2023-05-12 11:00  E6-2 #1323  (응집물리 세미나)Interlayer conductivity and plasmon in weakly coupled layered systems
260 2023-01-12 14:40  E6-2 #1323  JILA 1D Wannier-Stark optical lattice clock file
259 2023-01-11 11:00  E6-2 #1323  Directly proving magnetoelastic coupling in a soft ferromagnet using Lorentz 4D-STEM file
258 2023-04-27 16:00  E6-2 #1323  (광학분야 세미나)On-chip spectrometers based on CMOS image sensors
257 2023-04-14 12:00  E6-2 #1323  (응집물리 세미나)Exotic quantum phenomena in two-dimensional materials file
256 2024-01-24 15:00  E6-2 #1323  Determination of single molecule loading rate during mechanotransduction file
255 2023-05-18 16:00  E6-2 #1323  (광학분야 세미나)Dielectric metasurfaces for optimized optical system and spatial light modulators
254 2022-11-11 11:00  E6-2 #1323  [Update 세미나영상] (응집물리 세미나) Honeycomb oxide heterostructures for quantum spin liquid file
253 2023-03-17 11:00  E6-2 #1323  (응집물리 세미나)Operando electron microscopy investigation of domain dynamics in twisted van der Waals materials file
252 2022-10-27 16:00  E6-2 #1323  (광학분야 세미나) Cavity optomechanical systems for quantum transduction
251 2023-05-19 11:00  E6-2 #1323  (응집물리 세미나)Dipole condensations in Tilted Bose-Hubbard Chains
250 2022-10-07 11:00  E6-2 #1323  [Update 세미나 영상] (응집물리 세미나) Competing orders in a vanadium-based kagome metal monolayer file
249 2022-09-23 11:00  E6-2 #1323  [Update 세미나 영상] (응집물리 세미나) Steady Floquet-Andreev states in graphene Josephson junctions file
248 2023-05-26 11:00  E6-2 #1323  (응집물리 세미나)Spectral Analyses of Stochastic Charge Trapping in Oxide Heterostructures file
247 2023-09-07 12:00  E6-2 #1323  2023 가을학기 광학분야 및 응집물리 특별세미나 전체 일정 file
246 2022-10-13 16:00  E6-2 #1323  (광학분야 세미나) Ultrafast Optics for Ultra-Precision Metrology and Realization of Flexible/Stretchable Laser-Induced-Graphene Electronics
245 2022-12-07 16:00  E6-2 #1323  (광학분야 세미나) Non-Hermitian physics and non-Hermitian singularity
244 2022-06-03 11:00  E6-2 #1323  (응집물리 세미나) Theoretical Investigation of Exotic Quantum States in Low-dimensional Materials