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Related Experiment Video

Updated: May 11, 2026

Rejection of Fluorescence Background in Resonance and Spontaneous Raman Microspectroscopy

Rejection of Fluorescence Background in Resonance and Spontaneous Raman Microspectroscopy

Published on: May 18, 2011

Efficient Raman frequency conversion by coherent feedback at low light intensity.

Bing Chen¹, Kai Zhang, Chengling Bian

¹Quantum Institute for Light and Atoms, State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, China.

|May 15, 2013

Summary

This summary is machine-generated.

Researchers achieved efficient Raman conversion in Rb-87 atomic vapor, producing Stokes and anti-Stokes fields. This method offers a simple setup for generating new light sources with potential applications in optics and spectroscopy.

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Published on: December 30, 2025

Area of Science:

Atomic Physics
Nonlinear Optics

Background:

Raman conversion is a key process for frequency conversion.
Efficient generation of Stokes and anti-Stokes fields is crucial for various applications.

Purpose of the Study:

To experimentally demonstrate efficient Raman conversion in Rb-87 atomic vapor.
To explore the conversion efficiency in both pulsed and continuous modes.

Main Methods:

Utilized a Rb-87 atomic vapor cell for Raman conversion experiments.
Employed coherent feedback of Raman pump and converted fields.

Main Results:

Achieved 40-50% conversion efficiency for Stokes fields.
Achieved 20-30% conversion efficiency for anti-Stokes fields.
Demonstrated efficient conversion in both pulsed and continuous wave (CW) modes.

Conclusions:

The developed method provides a simple and efficient way for Raman conversion.
The technique is adaptable for other Raman media with long coherence times.
Potential applications include nonlinear optics, Raman spectroscopy, and precision measurements.