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Related Concept Videos

Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
Raman Spectroscopy: Overview01:20

Raman Spectroscopy: Overview

The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and the...

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Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
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Published on: December 15, 2021

Side-pumped crystalline Raman laser.

Richard P Mildren1

  • 1MQ Photonics Research Centre, Macquarie University, Sydney, NSW, 2109, Australia. rich.mildren@mq.edu.au

Optics Letters
|January 26, 2011
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel crystalline Raman laser with a 46% slope efficiency. This side-pumped laser shows potential for flexible, high-power coherent beam combination and conversion applications.

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Area of Science:

  • Optics and Photonics
  • Laser Physics
  • Materials Science

Background:

  • Crystalline Raman lasers offer unique properties for light generation.
  • Efficient pumping schemes are crucial for optimizing laser performance.
  • Coherent beam combination and conversion are key areas in laser technology.

Purpose of the Study:

  • To investigate the performance of a crystalline Raman laser pumped at 90 degrees.
  • To determine the threshold pump energy and slope efficiency.
  • To assess the potential for coherent beam conversion and combination.

Main Methods:

  • A crystalline Raman laser was side-pumped by a line-focused 532 nm pulsed laser.
  • The pump laser had a pulse duration of 10 nanoseconds.
  • Output energy and slope efficiency were measured at various pump energies.

Main Results:

  • The Raman laser threshold was 6.1 mJ.
  • A maximum output energy of 2.7 mJ was achieved at 12 mJ pump energy.
  • The slope efficiency reached 46%.

Conclusions:

  • The side-pumped crystalline Raman laser demonstrates high efficiency.
  • Threshold pump intensity is comparable to end-pumped configurations.
  • The system shows significant potential for flexible, high-power coherent beam applications.