Title

Phase Fresnel Lens Recorded In Photo-Thermo-Refractive Glass By Selective Exposure To Infrared Ultrashort Laser Pulses

Abstract

Anew two-step approach for fabricating phase optical elements in photo-thermo-refractive glass by exposure to IR ultrashort laser pulses followed by thermal development is shown. A binary phase Fresnel lens was designed to focus light at 632.8 nm to a focal length of 400 cm. Conditions of ultrashort pulse irradiation and thermal development were chosen to achieve π phase shift between zone boundaries. The focusing efficiency of the element was measured to be close to 50%. © 2008 Optical Society of America.

Publication Date

1-1-2009

Publication Title

Optics Letters

Volume

34

Issue

1

Number of Pages

40-42

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/OL.34.000040

Socpus ID

58149503222 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/58149503222

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