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Facilities at the Department of Physics

Computational facilities:

  • Two interconnected dual-processor clusters: One cluster with 16 nodes plus one master with AMD-Opteron 1.5 GHz, 64-bit processors and 1 Tbyte storage capacity. A second cluster with 6 Pentium 866 MHz processors and 6 AMD-Athlon 1.2 GHz, 32-bit processors. Additional Pentium-4 desktop computers are connected to both clusters.

  • Workstations for simulation/visualization: Five Silicon Graphics workstations and four dual-processor, dual-monitor workstations.

  • Computer room with Pentium-4 desktop computers for use by Department students (currently being expanded to 24 stations).

  • Forty-eight Pentium-4 desktop computer stations in teaching labs, with wireless connection to Physics laboratory server.

  • Access to UPR High Performance Computer Facility

Facilities for materials preparation and other fabrication:

  • Several sputtering systems (magnetron, ion beam, pulsed).
  • Pulsed Laser Deposition systems.
  • Hybrid Molecular Beam Epitaxy / Pulsed Laser Deposition system (dedicated to nitride materials).
  • Metal-Organic CVD system.
  • Sol-gel techniques for bulk and thin films.
  • Langmuir-Blodgett technique thin film growth system.
  • Cluster beam source designed for vapor-phase formation of nanoclusters.
  • Solid-state processing techniques.
  • Techniques for semiconductor nanowire growth.
  • K & S hybrid wire/tape bonder.
  • Micronizing mill grinder.
  • Programmable high temperature furnaces (up to 1,700EC).
  • Hydraulic presses (12 ton).
  • Well equipped fine mechanics workshop, staffed by full-time machinist.

Facilities for characterization and study of solid materials and thin films:

  • Bruker AXS Discover high-resolution 4-circle x-ray diffractometer system with parabolic multilayer x-ray collimator, 4-reflection Ge crystal monochromator, 2-reflection crystal analyzer, and reflectometry attachment.

  • Two computerized setups, including closed cycle refrigerators and cryostats, for electrical characterization of materials; one setup capable of temperatures down to 4 K and magnetic fields up to 4 Tesla with superconducting magnet, equipped for magneto-optic and magneto-resistance measurements, including far-IR spectrometer; second setup for temperatures from 10K to 450K, and magnetic fields up to 1 Tesla, incorporating a Deep-Level Transient Spectrometer for studies of defects in semiconductors.

  • AFM/STM microscopes (two systems) contact, non-contact, and intermittent-contact mode capabilities. One system has capability for nanoscale manipulation.

  • Electron Paramagnetic Resonance spectrometer.

  • Optical microscopes with DIC capability, interferometric objectives, and cooled CCD cameras.

  • Tencor Alpha-Step-100 stylus profilometer.

  • Radiant Technologies standardized ferroelectrics tester.

  • Feedback stabilized interferometer with sub-angstrom sensitivity for measurements of piezoelectric response of thin films (house built).

  • Woollam 44-wavelength ellipsometer.

  • TA-Instruments model 2920 Differential Scanning Calorimeter.

  • Quad Tech model 7600 LCR-meter, with frequency range from 10 Hz to 2 MHz.

  • Access to additional materials characterization facilities at UPR Materials Characterization Center.

Laboratory facilities for laser spectroscopy of solids:

  • Extensive state-of-the-art facilities for laser spectroscopy of solids and nonlinear optics studies of materials, including tunable femtosecond and picosecond laser sources, double spectrometers, and ample detection and signal processing instrumentation.

Laser facilities and related electronics in our labs are quite substantial, and include state-of-the-art ultrafast lasers and detection instrumentation for spectroscopy and nonlinear optics work:

  1. Laser sources:
    Spectra-Physics femtosecond laser system including: (1) Millennia diode pump laser, (2)Tsunami Ti:sapphire laser, (3) Merlin YLF pump laser, (4) Spitfire regenerative amplifier; (5) fs-Optical Parametric Amplifier (150fs pulse width, tunning range: 400-680nm).
    Coherent MIRA-900 femtosecond laser
    Continuum PY-610 high power (up to 10 GW/cm2 ) 20ps-laser and ps-OPG system (tunning: 400- 750nm).
    Continuum nanosecond YAG pulsed laser with a TDL-50 dye laser
    INNOVA-306 Ar+ and 599 Dye laser

  2. Spectroscopic and data processing equipment:
    Time domain spectroscopy: including 3 sets of sophisticated optical delay line systems with accuracy up to 10 fs for time-resolved DFWM.
    Time-resolved laser spectroscopy system: including 2 boxcar averagers, photon counting system, multichannel analyzer, dual channel lock-in amplifiers, transient scaler, etc.

    High-resolution frequency domain spectroscopy: SPEX 1403 Ramanlog double spectrometer; ISA TR320MST-2XS spectrometer system (UV, Visible, IR); Hitachi UV/Visible Spectrophotometer; ISA Fluoro-Max-2 Spectrophotometer.

  3. Other equipment for spectroscopy:
    Cryogenic systems for low temperature measurement (down to 8K), a variety of modern detectors, PMTs, gated signal processors and other equipment for low-signal detection, including photon counting.

Equipment for Astronomy / Astrophysics / Astronomical Optics:

  • Computer-controlled 16" reflector telescope located in the dome of the Physics building.
    Astronomy cameras.

  • Shack-Hartmann interferometer system.

  • Scintillometers (laser anemometers).

  • Spectrometers.

  • Faculty members working in radioastronomy can have access to the Arecibo radiotelescope, the largest in the world.

Departamento de Física
Recinto Universitario de Mayagüez
Call Box 9000
Mayagüez, PR 00681-9000
Tel. 787-832-4040 exts. 3844, 787-265-3844
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