Related Experiment Video
Updated: Jun 20, 2026
09:57
Ultrafast Time-resolved Near-IR Stimulated Raman Measurements of Functional π-conjugate Systems
Published on: February 10, 2020
Highly efficient diamond Raman laser
1MQ Photonics Research Centre, Macquarie University, Sydney, New South Wales 2109, Australia. rich.mildren@mq.edu.au
Optics Letters
|September 17, 2009
Summary
We developed an efficient diamond Raman laser using a 532 nm pump, achieving high conversion efficiencies for visible light generation. This advancement offers a powerful new source for scientific applications.
Area of Science:
- Optics and Photonics
- Laser Physics
- Materials Science
Background:
- Raman lasers are crucial for generating specific wavelengths.
- Diamond is a promising material for Raman conversion due to its properties.
- Efficiently generating visible light from lasers is an ongoing research area.
Purpose of the Study:
- To demonstrate an efficient external cavity diamond Raman laser.
- To characterize the performance of the diamond Raman laser system.
- To achieve high conversion efficiencies for visible light generation.
Main Methods:
- Utilizing a 532 nm pump laser.
- Employing an external cavity design with diamond as the Raman medium.
- Operating at a pulse repetition rate of 5 kHz.
Main Results:
- The diamond Raman laser generated output primarily at the 573 nm first Stokes wavelength.
- Achieved a maximum output power of 1.2 W with a conversion efficiency of 63.5%.
- Demonstrated high slope efficiency (75%), peak instantaneous conversion efficiency (85%), and peak photon conversion efficiency (91%).
- Maximum output energy of 0.67 mJ was obtained by optimizing pump beam size and pulse energy.
Conclusions:
- The developed diamond Raman laser is highly efficient for visible light generation.
- The achieved efficiencies are comparable to the best reported for other Raman materials.
- This work highlights the potential of diamond in high-performance laser systems.
Related Concept Videos
01:26Raman 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...
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...
01:20Raman 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...
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and the...