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Raman Spectroscopy Instrumentation: Overview

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A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
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Updated: Jun 20, 2026

Differential Imaging of Biological Structures with Doubly-resonant Coherent Anti-stokes Raman Scattering (CARS)

Differential Imaging of Biological Structures with Doubly-resonant Coherent Anti-stokes Raman Scattering (CARS)

Published on: October 17, 2010

Controllable pulse compression in a multiple-pass-cell Raman laser.

B Perry¹, R O Brickman, A Stein

¹Exxon Research and Engineering Company, Corporate Research-Science Laboratories, PO Box 45, Linden, New Jersey 07036, USA.

|August 21, 2009

Summary

This summary is machine-generated.

Pulse compression was observed in a hydrogen Raman laser, leading to high quantum conversion. This effect is attributed to beam crossings within the multiple-pass-cell laser

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Area of Science:

Laser physics
Nonlinear optics

Background:

Raman lasers are crucial for generating specific wavelengths.
Multiple-pass cells enhance light-matter interactions.

Purpose of the Study:

To analyze the phenomenon of pulse compression in a hydrogen Raman laser.
To understand the underlying mechanisms responsible for high quantum conversion.

Main Methods:

Utilized a 16-micrometer multiple-pass-cell hydrogen Raman laser.
Analyzed the optical geometry and beam interactions within the cell.

Main Results:

Observed significant pulse compression.
Achieved high quantum conversion efficiency of pump radiation.
Identified beam crossings as the cause of pulse compression.

Conclusions:

The geometry of the multiple-pass cell, specifically beam crossings, is responsible for pulse compression.
This phenomenon enhances the efficiency of Raman lasers.