RESOLUTION ENHANCEMENT

Twofold spatial resolution enhancement by two-photon exposure of photographic film

[+] Author Affiliations
Dmitriy V. Korobkin, Eli Yablonovitch

University of California, Los Angeles, Electrical Engineering Department, 1541 Boelter Hall, Los Angeles, California?90025-1594 E-mail: dkorobkin@sabeus.edu

Opt. Eng. 41(7), 1729-1732 (Jul 01, 2002). doi:10.1117/1.1479706
History: Received May 22, 2001; Revised Dec. 28, 2001; Accepted Jan. 11, 2002; Online June 25, 2002
Text Size: A A A

Two-photon absorption of photosensitive media can produce interference fringes with double spatial frequency. This requires the employment of multiple-frequency beams, which interfere with one another to produce a stationary image with double spatial resolution. The required beams were produced by frequency filtering of broadband radiation from a cw mode-locked femtosecond Ti:sapphire laser (λ=790nm) in a dispersion-free pulse shaper. Then the two multifrequency rays converged from opposite edges of a lens, focusing on Kodak commercial film. The laser intensity was high enough to produce a two-photon exposure. The doubling of the spatial frequency of the interference pattern has been observed, but the contrast ratio of the pattern was limited by competition from the more usual one-photon absorption. Laser pulse parameters for a single-pulse two-photon exposure have been estimated. © 2002 Society of Photo-Optical Instrumentation Engineers.

© 2002 Society of Photo-Optical Instrumentation Engineers

Citation

Dmitriy V. Korobkin and Eli Yablonovitch
"Twofold spatial resolution enhancement by two-photon exposure of photographic film", Opt. Eng. 41(7), 1729-1732 (Jul 01, 2002). ; http://dx.doi.org/10.1117/1.1479706


Tables

Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

PubMed Articles
Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.