Spot size and divergence for Hermite Gaussian beams of any order
Abstract
The usual definition of spot size is modified to account for the higher-order Hermite Gaussian beams, and the resulting formulation is used to study the effect of the beam order on beam divergence. It is found that while the lowest-order beam produces a circular or elliptical spot of light, the higher-order beams produce a pattern of such spots over an area roughly bounded by a rectangle. The extension of the concept of spot size from lowest- to higher-order beams is most directly obtained by defining this rectangular illuminated area as the illuminated spot.
- Publication:
-
Applied Optics
- Pub Date:
- April 1980
- DOI:
- 10.1364/AO.19.001027
- Bibcode:
- 1980ApOpt..19.1027C
- Keywords:
-
- Gauss Equation;
- Hermitian Polynomial;
- Laser Applications;
- Light Beams;
- Divergence;
- Electro-Optics;
- Fourier Transformation;
- Lasers and Masers;
- BEAMS