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Laser

Cryogenic

Overview

lab

A panomatic view of our laboratory: room B116 in Biomed Phys Sci Bldg.

The laboratory is currently equipped an array of advanced research instrumentation including lasers, spectrometers and imaging cameras, and low temperature cryogenic systems. Highlights of major equipment essential to the proposed experiments include: a 10 Tesla magneto-optical superconducting magnet system (Oxford Instruments Spectromag SM4000) with a top-loading helium-3 refrigerator (HelioxTL, down to ~400 mK) or integral helium-4 variable temperature insert (VTI); a liquid helium flow optical cryostat for low temperature optical measurements down to ~2K; Ti:Sapphire laser oscillator (Mira Optima 900D ) and optical parametric oscillator (Mira OPO) running at picoseconds or femtoseconds modes at 76MHz, covering wavelengths from 550 nm to 3300 nm; a pulse picker to control the pulse repetition rate from 5kHz to 5MHz; a streak camera system (Optronics Optoscope-SC) with 2-ps time resolution for time-resolved spectroscopy; a photon counting system for Hanbury Brown-Twiss type measurements, and two spectroscopy systems equipped with liquid nitrogen cooled Si- and InGaAs CCDs, and a PbS solid-state detector with a lock-in amplifier for high spectral resolution spectroscopy in the VIS-NIR (400nm-1000nm) or IR (900nm-3000nm) range.