Facilities - freedom to innovate

Semiconductor Processing - dream it, have it

UCSB is a world leader in III-V semiconductor processing and molecular beam epitaxy (MBE). The state-of-the-art Nanofabrication Facility, one of the premier university cleanroom facilities in the country, was recently augmented by the engineering sciences cleanroom--occupying the entire first floor of a brand new 90,000 sq. ft. building. In addition the CNSI building (under construction) will have its fourth floor as a dedicated cleanroom, with areas for biological as well as chemical experiments.

Terahertz Sources - all in one convenient location

Central to our experimental facilities are the free-electron lasers or FELs (0.5-5 THz, 50-1000 µm, 5 kW peak power, 10 µs pulses) at the Center for Terahertz Science and Technology. These are the world's premier sources for intense, coherent terahertz radiation. At the output of the FEL is a pulse-slicer, capable of slicing short pulses (adjustable from 10 ps - 100 ns) out of the main FEL microsecond pulse. In addition, we have available other THz sources: molecular-gas laser (various FIR lines, 25 mW CW), and coherent broadband THz source (0.5-5 THz, driven by modelocked Ti:S) incorporated with THz time domain spectroscopy system.

Terahertz Optics - unique expertise

Wire-grid polarizers
Variable retardation plates
Large off-axis parabolic mirrors and elliptical mirrors
TPX THz lenses

Terahertz Spectrometers

Bomem FTIR spectrometer
Bruker FTIR spectrometer
THz time domain spectrometer (Michelson interferometer w/ coherent broadband source)

Optical sources, detectors, dispersion

[Doubled] Mode-locked Ti:S laser ([350-400nm], 700-800nm, 150 fs pulses)
Regenerative Ti:S amplifier (10 mJ per pulse)
CW Tunable Ti:S laser (700-1000nm, 1 W cw)
Doubled Nd:YAG (532nm, 10 mJ per pulse)
Ar ion laser (488nm, 5 W cw)
TE-cooled GaAs photon-counting PMT (Hamamatsu 943-02) (160-930nm) and Several other PMT's
TE-cooled MCP intensified CCD (400-900nm)
0.85m SPEX double-grating Raman spectrometer
Acton grating spectrometers: 0.75m, 0.5m, 0.15m (2)
Princeton Instruments back-illuminated, deep-depletion CCD
New Focus Fizeau wavelength meter
New Focus External Cavity Tunable Diode Laser
Several CW diode and HeNe lasers

Terahertz Detectors

Liquid He cooled Si bolometer (thermal-limit, 100 ms response)
Liquid He cooled InSb bolometer (200ns response)
Fast Ga:Ge photoconductor (moderate-sensitivity, 1 ns response)
Pyroelectric detectors (low-sensitivity, 1 ns response)
Thomas Keating absolute calibrated detector.
TACIT detector (under development, currently <1ns response)

Cryogenics

8 Tesla Oxford superconducting optical cryostat
8 Tesla Oxford spectromag split-coil superconducting magnet
12 Tesla Oxford spectromag split-coil superconducting magnet
Several liquid helium flow cryostats with optical access
Several liquid nitrogen cooled detector housings

 

Lab Locations

Free Electron Laser Facility (1300 series rooms): Access to the FEL is through Broida Hall room 1357, located at the east end of the Broida Hall first floor south-facing outdoor walkway. Keypad entry is not required during business hours. See the CTST site for a map of the FEL including conference room and FEL user lab locations. Telephone numbers are Dave Enyeart's office: 893-3390, THz source and Detector Lab (1380B): 893-4707 (collaborative lab with Allen group), Quantum Control Lab (1380C): 893-2423 (collaborative lab with Awschalom group), Pulse Slicer Lab (1380D): 893-8396, THz Spin lab (1380E--coming soon) 893-8396.

FTIR lab: Broida Hall room 1215 (first floor, south-facing outdoor walkway opposite the temporary office space). Houses Bruker and Bomem FTIR instruments, flow cryostats (one sample-in-vacuum, one sample-in-vapor), bolometers and optical/NIR spectroscopy equipment. Telephone: 893-2132.

THz spectroscopy lab: Broida Hall room 1217, access via FTIR lab. Includes clean bench, chemical hood, network analyzer and (coming soon) CW multiplied solid-state THz source.