In MAS 3.18:

Terahertz time-domain spectroscopy:

• 0.1-4.5THz bandwidth.
  
• transmission and reflection spectroscopy capabilities.
• low sample temperatures (helium or nitrogen cryostats).
• polarisation resolved capability.
• based on photoconductive generation of THz radiation pulses using interdigitated emitters, and electro-optic sampling.

Equipment:

• Femtolasers Scientific XL 650 laser; 40fs; 650nJ/pulse at 800nm; 4MHz repetition rate
• Mai Tai BB laser; 70fs; 12nJ/pulse; tunable from 710nm to 990nm; 80MHz repetition rate
• Oxford Instruments cryostats: two helium flow cryostats; one nitrogen bath cryostat.
• Lock-in amplifiers (Stanford SR830; Signal Recovery 7230)
• High voltage amplifiers
• Keithley source-measurement units for electrical characterisation
• Newport and Thor Labs motorised stages and stage controllers
• USB spectrometer [200nm to 1000nm], halogen lamp, deuterium lamp
• Assorted photodiodes, electro-optic crystals, second-harmonic generation crystals, optomechanics, etc...

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In MAS 2.11:

Optical pump, terahertz probe spectroscopy:

• Photoconductivity measurements on sub-picosecond to nanosecond times
  
• UV (>290nm), visible and IR (<9um) excitation options via a TOPAS with NIRUVis and NDFG options [alternative wavelengths further into the UV or IR optionally available, see WCUS pages].
• Nitrogen or vacuum (<10^-4mbar) environment
• 0.1-4.5THz bandwidth (with 200um GaP detection crystal) or 0.1-3.0THz bandwidth (with 2mm ZnTe detection crystal). 2mm GaP emitter crystal.
  

In Physics 423:

Terahertz time-domain spectroscopy (transmission & reflection) & imaging (reflection):

• Teraview Terapulse 4000 commercial THz-TDS system
• Transmission accessory
• Reflectance mapping/imaging accessory
• Remote heads