Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Optimizing two-photon absorption for volumetric optical data storage

Not Accessible

Your library or personal account may give you access

Abstract

We study the requirements imposed on organic photochromes for two-photon absorption (2PA) terabyte volumetric optical storage. We present a quantitative model of signal-to-noise ratio (SNR) and signal-to-background ratio (SBR) when 2PA-induced photochromic switching is used for writing, and 2PA-induced fluorescence is used for readout. We show that single-channel data access rate >100MHz at minimum SNR>4 implies minimum intrinsic 2PA cross section, σ2>103GM. Resonance enhancement allows σ2105GM, however, it also lowers SBR due to thermally-activated one-photon absorption. We model the critical trade-off between SNR and SBR as a function of laser frequency, intensity, and temperature. Acceptable parameter space may be achieved by careful choice of the above variables. We perform experiments with nonsymmetrical free-base phthalocyanines, which show efficient 2PA-induced photochromic switching between two tautomer forms and large σ2104GM, and show good potential for high-capacity data storage.

© 2007 Optical Society of America

Full Article  |  PDF Article
More Like This
Enhancement of two-photon absorption in tetrapyrrolic compounds

Aliaksandr Karotki, Mikhail Drobizhev, Mikalai Kruk, Charles Spangler, Erik Nickel, Nugzar Mamardashvili, and Aleksander Rebane
J. Opt. Soc. Am. B 20(2) 321-332 (2003)

Molecular structure—two-photon absorption property relations in polymethine dyes

Jie Fu, Lazaro A. Padilha, David J. Hagan, Eric W. Van Stryland, Olga V. Przhonska, Mikhail V. Bondar, Yuriy L. Slominsky, and Alexei D. Kachkovski
J. Opt. Soc. Am. B 24(1) 56-66 (2007)

Experimental and theoretical approaches to understanding two-photon absorption spectra in polymethine and squaraine molecules

Jie Fu, Lazaro A. Padilha, David J. Hagan, Eric W. Van Stryland, Olga V. Przhonska, Mikhail V. Bondar, Yuriy L. Slominsky, and Alexei D. Kachkovski
J. Opt. Soc. Am. B 24(1) 67-76 (2007)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (20)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


    Select Topics Cancel
    © Copyright 2024 | Optica Publishing Group. All Rights Reserved