Related Experiment Video
Updated: Jun 22, 2026
06:48
Fluid-cell Raman Spectroscopy for operando Studies of Reaction and Transport Phenomena during Silicate Glass Corrosion
Published on: May 9, 2025
Raman oscillation on a new vibrational mode setup in phosphosilicate binary glass systems.
Optics Express
|June 5, 2009
Summary
Researchers achieved efficient Raman fiber laser oscillation at 1158 nm using a novel phosphosilicate glass vibrational mode. This breakthrough utilized fiber Bragg gratings, yielding a 60.4% slope efficiency and 1.8 W maximum power.
Area of Science:
- Optics and Photonics
- Materials Science
- Laser Physics
Background:
- Raman fiber lasers offer unique wavelength generation capabilities.
- Phosphosilicate glasses are promising host materials for optical applications.
- Understanding vibrational modes is crucial for optimizing laser performance.
Purpose of the Study:
- To demonstrate Raman oscillation in a phosphosilicate-glass system at 1158 nm.
- To investigate a specific P-O vibrational mode at 800 cm-1 for laser applications.
- To achieve efficient laser output using this novel vibrational mode.
Main Methods:
- Pumping a phosphosilicate-glass fiber laser at 1060 nm.
- Utilizing fiber Bragg gratings for laser oscillation selection.
- Characterizing the laser output, including slope efficiency and maximum power.
Main Results:
- Raman oscillation was successfully demonstrated at 1158 nm.
- A P-O vibration mode at 800 cm-1 in phosphosilicate glass was identified as the gain mechanism.
- A slope efficiency of 60.4% and a maximum output power of 1.8 W were achieved.
Conclusions:
- The 800 cm-1 vibrational mode in phosphosilicate glass can support efficient Raman fiber laser oscillation.
- Fiber Bragg gratings are effective for selecting this specific vibrational mode for laser operation.
- This work paves the way for new phosphosilicate-based Raman fiber lasers.
Related Concept Videos
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...
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...
01:24IR Spectroscopy: Molecular Vibration Overview
When Infrared (IR) radiation passes through a covalently bonded molecule, the bonds transition from lower to higher vibrational levels. The fundamental vibrational motions that result in infrared absorption can be classified as stretching or bending vibrations.
Stretching vibrations are vibrational motions that occur along the bond line, changing the bond length or distance between two bonded atoms. They are further distinguished as symmetric or asymmetric. In symmetric stretching, the...
Stretching vibrations are vibrational motions that occur along the bond line, changing the bond length or distance between two bonded atoms. They are further distinguished as symmetric or asymmetric. In symmetric stretching, the...
01:08IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations
Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single stretching vibration...
01:16IR Spectroscopy: Hooke's Law Approximation of Molecular Vibration
A covalently bonded heteronuclear diatomic molecule can be modeled as two vibrating masses connected by a spring. The vibrational frequency of the bond can be expressed using an equation derived from Hooke's law, which describes how the force applied to stretch or compress a spring is proportional to the displacement of the spring. In this case, the atoms behave like masses, and the bond acts like a spring.
According to Hooke's law, the vibrational frequency is directly proportional to the...
According to Hooke's law, the vibrational frequency is directly proportional to the...