Abstract

A two-mirror laser beam expander can be used to provide small amounts of beam steering by moving one mirror. Such a motion would generally introduce aberrations into the output wavefront that would restrict the amount of diffraction-limited beam steering achievable to very small amounts. This paper describes how some or all of the third-order aberrations introduced by moving one mirror can be eliminated. By proper design, substantial amounts of diffraction-limited beam steering can be achieved.

© 1978 Optical Society of America

Full Article  |  PDF Article

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (4)

Fig. 1
Fig. 1

Beam expander–steerer with one moving element.

Fig. 2
Fig. 2

Type of system not covered.

Fig. 3
Fig. 3

Nomenclature.

Fig. 4
Fig. 4

Indeterminate neutral point.

Equations (3)

Equations on this page are rendered with MathJax. Learn more.

L = 2 f 1 [ M + C C 2 ( M 1 ) M + C C 2 ( M 1 ) C C 1 ] ,
L = 2 f 1 [ C C 1 ( M 1 ) + 2 M 1 2 M 1 C C 1 ]
C C 2 = 1 / ( 4 M 1 ) .

Metrics