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Title: Generalized Alvarez lens for correction of laser aberrations

Abstract

The Alvarez lens (US Patent No. 3,305,294 [1]) is a compact aberration corrector. The original design emphasized in the patent consists of a pair of adjacent optical elements that provide a variable focus. A lens system with a variable effective focal length is nothing new. Such systems are widely used in cameras, for example. It is the compactness and simplicity of operation that is the key advantage of the Alvarez lens. All of the complexity is folded into the design and fabrication of the optical elements. As mentioned in the Alvarez patent [1] and elaborated upon in Palusinski et al. [2], if one is willing to fold even more complexity into the optical elements, it is possible to correct higher-order aberrations as well. There is no theoretical limit to the number or degree of wavefront distortions that can be corrected. The only limitation is that there must be a fixed relative magnitude of the aberrations. Independent correction of each component of the higher-order aberrations can not be performed without additional elements and degrees of freedom [3]. Under some circumstances, coupling may be observed between different aberrations. This can be mitigated with the appropriate choice of design parameters. New methods aremore » available today that increase the practicality of making higher-order aberration correctors [4,5,6].« less

Authors:
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
15016780
Report Number(s):
UCRL-TR-208417
TRN: US200516%%92
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 42 ENGINEERING; CAMERAS; DEGREES OF FREEDOM; DESIGN; FABRICATION; LASERS

Citation Formats

LaFortune, K N. Generalized Alvarez lens for correction of laser aberrations. United States: N. p., 2004. Web. doi:10.2172/15016780.
LaFortune, K N. Generalized Alvarez lens for correction of laser aberrations. United States. doi:10.2172/15016780.
LaFortune, K N. Thu . "Generalized Alvarez lens for correction of laser aberrations". United States. doi:10.2172/15016780. https://www.osti.gov/servlets/purl/15016780.
@article{osti_15016780,
title = {Generalized Alvarez lens for correction of laser aberrations},
author = {LaFortune, K N},
abstractNote = {The Alvarez lens (US Patent No. 3,305,294 [1]) is a compact aberration corrector. The original design emphasized in the patent consists of a pair of adjacent optical elements that provide a variable focus. A lens system with a variable effective focal length is nothing new. Such systems are widely used in cameras, for example. It is the compactness and simplicity of operation that is the key advantage of the Alvarez lens. All of the complexity is folded into the design and fabrication of the optical elements. As mentioned in the Alvarez patent [1] and elaborated upon in Palusinski et al. [2], if one is willing to fold even more complexity into the optical elements, it is possible to correct higher-order aberrations as well. There is no theoretical limit to the number or degree of wavefront distortions that can be corrected. The only limitation is that there must be a fixed relative magnitude of the aberrations. Independent correction of each component of the higher-order aberrations can not be performed without additional elements and degrees of freedom [3]. Under some circumstances, coupling may be observed between different aberrations. This can be mitigated with the appropriate choice of design parameters. New methods are available today that increase the practicality of making higher-order aberration correctors [4,5,6].},
doi = {10.2172/15016780},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Dec 02 00:00:00 EST 2004},
month = {Thu Dec 02 00:00:00 EST 2004}
}

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