High Energy Lab

Lab contact: +81(0)98-966-1555
Location: Lab 2 A643
(Prep. Room A642)
 

In this laboratory, we produce our highest energy femtosecond pulses of 5 mJ (hence, "High Energy" lab) with a 1 kHz repetition rate from a Ti:Sapphire regenerative amplifier system. The high output power allows for a variety of nonlinear processes and generation of light from 240 nm to 20 µm as well as the Terahertz regime. The research in this lab utilizes Pump-Probe Spectroscopy in different domains of electromagnetic spectrum to study van der Waals materials [1-3], as well as interdisciplinary studies in neuroscience [4] and art conservation [5].

  1. B. M. K. Mariserla et al., Adv. Opt. Materials 3, 1551 (2015).
  2. S. Ghosh et al.,Sci. Rep 5, 11272 (2015).
  3. C. E. Petoukhoff et al., ACS Nano 10, 9899 (2016).
  4. T. Nakano et al., Scientific Reports 4, 5398 (2014).
  5. T. Harada et al., Materials 10, 107 (2017).

EXPERIMENTAL CAPABILITIES:

  • Laser sources:
    • Spectra Physics Spitfire Ace (800 nm, 1 kHz, 5 mJ, 70 fs)
    • Spectra Physics MaiTai (800 nm, 42 MHz, 19 nJ, 40 fs)
  • Nonlinear wavelength conversion:
    • Light Conversion TOPAS (240 nm to 20 µm)
    • THz generation by optical rectification (0.3 THz to 3.1 THz)
  • Pulse compression and diagnosis:
    • Swamp Optics pulse compressor
    • Light Conversion TiPA autocorrelator
  • Experimental setups:
    • Transient absorption spectroscopy
    • Two color pump probe
    • THz time-domain spectroscopy and optical pump - THz probe
    • Laser cutting for art conservation
    • Laser ablation process
    • Wide field two-photon microscope
    • Micro pump probe

 

​Page last updated on September 03, 2017 (BM/CP).