A hybrid GO–Gaussian ray beam

✍ Scribed by Per-Simon Kildal; Oscar Rubinos Lopez

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 136 KB
• Volume: 15
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/(sici)1098-2760(19970805)15:5<278::aid-mop4>3.0.co;2-6

✦ Synopsis

In modern geometrical optics GO the field solutions are described as bundles of rays in which the field associated with each ray is independent of the fields of the other rays. But this description is not ¨alid in caustic regions where neighboring rays intersect. The Gaussian beam pro¨ides an approximate global description of a modal-type field solution, which is ¨alid e¨en in caustic regions where GO is in¨alid. In this article a hybrid GO᎐Gaussian ray beam is presented. It beha¨es as a GO ray bundle in one cross section along the propagation direction and as a Gaussian beam in the other. We also present the equations for the reflection of such a beam from an arbitrary cur¨ed reflector. ᮊ 1997