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Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators

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Stark-cell stabilized submillimeter wave laser at 393 mum.

J L Lachambre, M Gagné

|June 29, 2010

Summary

New Stark resonances in methylene fluoride were observed using a carbon dioxide (CO2) laser. These findings enable the stabilization of a formic acid laser for advanced spectroscopic applications.

Area of Science:

Molecular spectroscopy
Laser physics
Quantum optics

Background:

Methylene fluoride (CH2F2) is a molecule with significant applications in laser technology.
Carbon dioxide (CO2) lasers provide a versatile source for molecular spectroscopy.
Stark resonances are crucial for understanding molecular interactions with electric fields.

Purpose of the Study:

To investigate and report novel Stark resonances in methylene fluoride.
To utilize these resonances for stabilizing an optically pumped laser system.

Main Methods:

High-resolution spectroscopy using a 9.4-micrometer (μm) carbon dioxide (CO2) laser.
Observation of Stark resonances on the R18 transition of methylene fluoride.
Application of observed resonances to frequency stabilization techniques.

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Last Updated: Jun 11, 2026

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Main Results:

Successfully identified new Stark resonances in methylene fluoride.
Demonstrated the use of these resonances to stabilize an optically pumped formic acid laser operating at 393 μm.

Conclusions:

The observed Stark resonances provide a new method for laser stabilization.
This work advances the precision of molecular laser systems.
Highlights the utility of methylene fluoride in spectroscopic applications.