Department of Physics and Astronomy

Seoul National University

Facility

Ultrafast laser and amplifier

  • Ultrafast Ti: Sapphire oscillator (Coherent Micra)

  • 250-kHz regenerative amplifier (Coherent RegA 9050): > 6 µJ per pulse

  • 1 kHz regenerative amplifier (Coherent Astrella): > 7 mJ per pulse

  • Tunable (1.2 µm ~ 2.4 µm) infrared Optical Parametric Amplifier (Coherent OPA 9850)– Visible (480 nm ~ 2.3 µm) Optical Parametric Amplifier (Coherent OPA 9450)

  • Mid-IR (3 µm ~ 6 µm) Difference-Frequency Generators (Coherent DFG 9850)

Ultrafast optical and transport measurement

  • Optical-pump (400 nm ~ 6 µm) and THz-probe (0.5 THz ~ 20 THz) spectroscopy

  • All optical pump-probe (400 nm ~ 6 µm) spectroscopy

  • Ultrafast Kerr-rotation spectroscopy and microscopy

  • Scanning near-field confocal microscopy: home-built spatially (~ 1 µm) and temporally (~ 100 fs) resolved scanning microscopy with PL, PLE, and photocurrent 2D mapping

  • Time-correlated single-photon counting and timing (PicoQuant) for quantum optics

  • AttoDRY 2100 magneto-optic closed cycle cryostat, an automated temperature control from 1.65 K to 300 K, ~9 Tesla

  • Low-temperature probe station with 6 contact arms

  • Two JANIS ST-300 cryostat: 4 K, liquid-flow vacuum cryostat for THz spectroscopy

  • One JANIS ST-500 cryostat: 4 K, liquid-flow vacuum cryostat for single photon emitters

  • Two Oxford Microstat: 4 K, liquid-flow vacuum cryostat

  • Quantum cascade laser (QCL): continuous-wave lasing at 10 µm

  • Photoluminescence excitation spectroscopy (PLE) 

  • Photoluminescence (PL) spectroscopy

Device fabrication

  • Glove box with oxygen and water level below 1 ppm

  • Mask-aligner with 1 μm of alignment accuracy

  • Furnace for thermal annealing

  • Fume hood for chemical treatment

  • Thermal Evaporator system with thickness measurement

  • Reactive Ion Etcher (Ar, O2, SF6, CF4)

Copyright ⓒ Ultrafast Quantum Photonics Laboratory, 2011
Department of Physics & Astronomy, Seoul National University

1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea