Raman Spectroscopy Using a Spatial Heterodyne Spectrometer

Description:

Reference #: 00935

The University of South Carolina is offering licensing opportunities for this technology

Potential Applications:

  1. Ideal for deep-UV laser excitation

  2. Pure rotational or ro-vibrational Raman measurements

  3. Planetary lander/rover measurements where the wide area collection capability of the instrument allows large areas of the surface to be measured quickly with no loss of spectral resolution

Advantages and Benefits:

The SHS Raman spectrometer has many unique advantages over all previously reported Raman spectrometers. Typical examples include:

[A] Advantages over Monochromator (MC) for Raman

  1. Much higher etendue or throughput

  2. Wide-area collection capability

  3. Much higher resolving power in a much smaller and lighter package

  4. Much larger input aperture compared to MC slit

[B] Advantages over Michelson Interferometer (MI)

  1. No moving parts in SHS allows using a pulsed laser and gated detector so it can be used in ambient light conditions, and so an entire Raman spectrum can be acquired with each laser pulse. This allows a pulse around the laser wavelength to increase the resolution in the deep UV.

  2. SHS gives higher resolving power in the deep UV using much lower tolerance optics.

  3. SHS allows the use of simple wedge prisms to further increase the acceptance angle, not possible or easy in a moving mirror resign like the MI

Invention Description:

The Spatial Heterodyne Spectrometer (SHS) is used to measure wide area diffuse stellar emission. It is also used for absorption measurements.

It has unique characteristics which include high optical throughput (e.g., large etendue), wide acceptance angle which gives the ability to measure wide-area, extended sources of light, very high resolving power, large entrance aperture [as opposed to the to a monochromator slit], small size in proportion to the resolving power, and no moving parts. It is implemented differently than all prior applications of the SHS spectrometer.

Patent Information:
Title App Type Country Serial No. Patent No. File Date Issued Date Expire Date Patent Status
Systems and Methods for Spatial Heterodyne Raman Spectroscopy Utility United States 13/654,924 10/18/2012      
For Information, Contact:
Technology Commercialization
University of South Carolina
technology@sc.edu
Inventors:
S. Michael Angel
Nathaniel Gomer
Jerry Chance Carter
Keywords:
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