CSD Laser Spectroscopy and Chemical Microtechnology Group
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Publications
Presentations

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Optical Instrumentation:

Ultrafast Lasers

150 fs laser system:
Ti:Sapphire oscillator laser
  (76 MHz, 150 fs / 2 ps, 700 to 1000 nm)
Amplified Ti:Sapphire laser
  (150 fs, 50-250 kHz, 780 nm, 6 J/pulse)
Visible and near-infared optical parametric   amplifiers (tunable 480 to 2400 nm)
Difference frequency generator   (tunable 1200 to 7000 nm)
Doubler units to convert visible and near-infrared lasers to second harmonic frequencies

18 ps tunable laser system:
1064/532 nm mode-locked Nd:YAG pump laser   (30 mJ)
Optical parametric generator   (670 to 2300 nm)
Difference frequency generation for tunable mid-infrared (1500 to 8000 nm)

10 ns laser system:
1064/532 nm Q-switch Nd:YAG pump laser
Optical parametric oscillator (400 to 800 nm)
Wavelength extension unit for ultraviolet light generation (250 to 400 nm)

Excimer lasers (10 ns, 193, 248, and 308 nm)

Continuous Wave Lasers:

Argon ion lasers (4) (355, 488, and 514 nm)
High resolution ring Ti:Sapphire/dye laser (700 to 1000 nm)
Helium cadmium laser (325 and 442 nm)

Spectrometers/Microscopes

Coupled fluorescence microscope/atomic force microscope (AFM)
Coupled fluorescence microscope/near field scanning optical microscope (NSOM)
0.5 meter spectrographs with CCD and intensified CCD cameras
Picoharp single photon counting lifetime apparatus

Ultrafast Laser Spectroscopy for Chemical Imaging

Project Results:

Optical Anisotropy in InP Semiconductor Quantum Dots

Spatially Imaged 2-Photon excited NPP Luminescence

Apertureless NSOM of a Gold Nano-Octahedron Apex

Tip-modulated Fluorescence Imaging

Gold Nano-octrahedra imaging and spectra

Ultrafast Raman Spectra of a Diamond Surface

Experimental for Sum Frequency Generation Imaging

 

 

 

 

 

 

 

 

 

Laser Spectroscopy and Chemical Microtechnology Group

Provided by Oak Ridge National Laboratory's Chemical Sciences Division
Rev:  November 2008