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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

Continuous-wave diamond Raman laser.

Walter Lubeigt1, Gerald M Bonner, Jennifer E Hastie

  • 1Institute of Photonics, University of Strathclyde, 106 Rottenrow, Glasgow G4 0NW, UK. walter.lubeigt@strath.ac.uk

Optics Letters
|September 3, 2010
PubMed
Summary
This summary is machine-generated.

Continuous-wave operation of a diamond Raman laser was achieved using a low-birefringence synthetic diamond. This laser system produced 200 mW of continuous-wave output power at 1240 nm, demonstrating potential for efficient laser applications.

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Area of Science:

  • Optics and Photonics
  • Laser Physics
  • Materials Science

Background:

  • Raman lasers offer unique wavelength generation capabilities.
  • Diamond is a promising material for high-power laser applications due to its thermal properties.
  • Efficient continuous-wave (cw) operation of diamond Raman lasers is desirable for various applications.

Purpose of the Study:

  • To demonstrate continuous-wave operation of a diamond Raman laser.
  • To investigate the performance of a synthetic single-crystal diamond in a Raman laser cavity.
  • To achieve significant output power at the Raman-shifted wavelength.

Main Methods:

  • Utilized a low-birefringence synthetic single-crystal diamond as the Raman medium.
  • Employed intracavity pumping with a Neodymium-doped Yttrium Orthovanadate (Nd:YVO4) laser.
  • Operated the laser in both continuous-wave (cw) and quasi-cw modes to evaluate performance.

Main Results:

  • Achieved 200 mW of cw output power at the Raman wavelength of 1240 nm.
  • Obtained 1.6 W of on-time output power in quasi-cw mode.
  • Identified diamond losses (approx. 1% per pass) and Nd:YVO4 thermal effects as key limitations to efficiency.

Conclusions:

  • Demonstrated the feasibility of cw operation for diamond Raman lasers.
  • Highlighted the potential of synthetic diamond for generating specific wavelengths.
  • Indicated areas for future improvement, focusing on reducing optical losses and managing thermal effects.