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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...
Average Power01:13

Average Power

In practical electrical applications, the concept of time-varying instantaneous power is not frequently utilized. Instead, focus shifts to the more practical quantity known as average power. Average power is determined by integrating the instantaneous power over a specified time period and subsequently dividing it by that duration.

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Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
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Published on: April 24, 2014

High average power diamond Raman laser.

Jean-Philippe M Feve1, Kevin E Shortoff, Matthew J Bohn

  • 1Directed Energy Solutions, Colorado Springs, Colorado 80907, USA. jpfeve@denergysolutions.com

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

We developed a powerful pulsed Raman laser using synthetic diamond, achieving record 24.5 W output power and 57% slope efficiency. This research confirms diamond

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Area of Science:

  • Laser physics
  • Materials science
  • Nonlinear optics

Background:

  • Pulsed Raman lasers are crucial for various scientific applications.
  • Synthetic diamond offers unique properties for high-power laser development.

Purpose of the Study:

  • To report a novel pulsed Raman laser utilizing synthetic diamond.
  • To achieve record output power and high slope efficiency.
  • To investigate the Raman gain coefficient of diamond.

Main Methods:

  • Utilized synthetic diamond crystals in a pulsed Raman laser setup.
  • Compared anti-reflection coated and Brewster cut crystal configurations.
  • Operated the laser at room temperature and cryogenic (77 K) conditions.
  • Employed experimental modeling to determine the Raman gain coefficient.

Main Results:

  • Achieved a record output power of 24.5 W at 1193 nm.
  • Demonstrated a slope efficiency of 57%.
  • Confirmed Raman oscillation at both room and cryogenic temperatures.
  • Determined the Raman gain coefficient of diamond to be 13.5 ± 2.0 cm/GW at 1030 nm pump wavelength.

Conclusions:

  • Synthetic diamond is a highly effective gain medium for high-power pulsed Raman lasers.
  • The demonstrated performance highlights the potential for advanced laser applications.
  • Accurate measurement of diamond's Raman gain coefficient is crucial for laser design.