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Raman Spectroscopy Instrumentation: Overview

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: Overview

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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.
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Related Experiment Video

Updated: May 27, 2026

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

Published on: December 15, 2021

Tunable continuous-wave diamond Raman laser.

Daniele C Parrotta¹, Alan J Kemp, Martin D Dawson

¹Institute of Photonics, SUPA, University of Strathclyde, Wolfson Centre, 106 Rottenrow, Glasgow G4 0NW, UK. daniele.parrotta@strath.ac.uk

|November 24, 2011

Summary

This summary is machine-generated.

A novel diamond Raman laser, pumped by a semiconductor disk laser (SDL), achieved continuous-wave operation. This system generated 1.3 W of output power at 1227 nm with high efficiency and broad tunability.

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Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

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Published on: April 24, 2014

Area of Science:

Optics and Photonics
Laser Physics
Materials Science

Background:

Semiconductor disk lasers (SDLs) offer high power and good beam quality for pumping applications.
Diamond Raman lasers are efficient frequency converters but require optimized pumping.
Intracavity pumping configurations can enhance laser performance.

Purpose of the Study:

To demonstrate continuous-wave (CW) operation of a diamond Raman laser.
To investigate the performance of an intracavity-pumped configuration using an SDL.
To achieve efficient wavelength conversion and tuning in the visible spectrum.

Main Methods:

Utilized a 6.5-mm synthetic single-crystal diamond as the Raman gain medium.
Employed a diode-pumped InGaAs semiconductor disk laser (SDL) for intracavity pumping.
Measured output power, beam quality, and spectral characteristics.

Main Results:

Achieved CW operation with a threshold of 5.3 W of absorbed diode laser pump power.
Generated up to 1.3 W of output power at the first Stokes wavelength of 1227 nm.
Demonstrated excellent beam quality and an optical conversion efficiency of 14.4% with respect to absorbed pump power.
Achieved broad tuning of the Raman laser output from 1217 to 1244 nm.

Conclusions:

Continuous-wave operation of an intracavity-pumped diamond Raman laser is feasible and efficient.
The SDL-pumped diamond Raman laser offers high output power, excellent beam quality, and broad tunability.
This technology holds promise for various applications requiring tunable visible light sources.