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A Multimodal Wide-Field Fourier-Transform Raman Microscope
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Continuously tunable optical multidimensional Fourier-transform spectrometer.

P Dey1, J Paul, J Bylsma

  • 1Department of Physics, University of South Florida, 4202 East Fowler Ave., Tampa, Florida 33620, USA.

The Review of Scientific Instruments
|March 8, 2013
PubMed
Summary
This summary is machine-generated.

The multidimensional optical nonlinear spectrometer (MONSTR) has been upgraded for broad spectral tunability (520–1100 nm) and enhanced phase stability. This advancement enables new coherent optical experiments, particularly for biological molecule studies.

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Area of Science:

  • Nonlinear spectroscopy
  • Quantum optics
  • Optical instrumentation

Background:

  • The multidimensional optical nonlinear spectrometer (MONSTR) is a stable platform for coherent optical experiments.
  • Original MONSTR design was limited by a narrow spectral range, requiring optic changes for tunability.

Purpose of the Study:

  • To overcome limitations of the original MONSTR design.
  • To achieve broad spectral tunability and enhanced phase stability.
  • To enable new experimental capabilities in nonlinear spectroscopy.

Main Methods:

  • Utilized broadband coated and wedged beam splitters and compensator plates.
  • Modified beam paths for continuous tunability from 520 nm to 1100 nm.
  • Employed a 488.5 nm metrology laser for enhanced phase stability and extended blue-green spectral range.

Main Results:

  • Achieved continuous spectral tunability from 520 nm to 1100 nm without optic changes.
  • Enhanced phase stability using a shorter wavelength metrology laser.
  • Developed a method for active phase stabilization in reflection geometry.

Conclusions:

  • The upgraded MONSTR offers unprecedented spectral flexibility and stability.
  • This advancement significantly expands the applicability of multidimensional nonlinear spectroscopy.
  • The system is now ideal for studying a wider range of materials, including biological molecules.