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)

• Dual Channel Traveling-Wave (1.16 µm ~ 2.6 µm) Optical Parametric Amplifier (Light Conversion TOPAS-Twins)

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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

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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)