Related Experiment Video
Updated: Jul 7, 2026
09:10
Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
Published on: April 24, 2014
Experimental determination of the fundamental-mode diameter in solid-state lasers
Applied Optics
|February 21, 2008
Summary
A new method directly measures the fundamental mode radius in laser crystals by comparing spontaneous emission during laser operation to fluorescence without it. This allows optimization of pump-cavity overlap and thermal lens power.
Area of Science:
- Laser Physics
- Optical Engineering
Background:
- Accurate determination of the fundamental mode radius is crucial for optimizing laser performance.
- Understanding thermal lensing effects is essential for high-power laser systems.
Purpose of the Study:
- To develop a direct method for measuring the fundamental mode radius in laser crystals.
- To enable optimization of pump-cavity beam overlap.
- To quantify the dioptric power of thermally induced lenses.
Main Methods:
- Developed a technique comparing spontaneous emission distribution during laser operation with fluorescence distribution without laser emission.
- Measured mode radius across varying pump powers.
Main Results:
- Successfully demonstrated a direct method for fundamental mode radius determination.
- Enabled optimization of pump beam and cavity beam overlap.
- Quantified the dioptric power of the thermally induced lens.
Conclusions:
- The developed method provides a direct and effective way to measure the fundamental mode radius in laser crystals.
- This technique facilitates optimization of laser parameters and characterization of thermal lensing effects.
