Title

Two-Photon Photochromism Of A Photorefractive Organic Material For Holographic Recording

Abstract

We report the two-photon induced photoisomerization of 3-[1-(1,2-dimethyl-1H-indol-3-yl)-ethylidene]-4-isopropylidene- dihydro-furan-2,5-dione (1), a photochromic compound with λmax = 385 nm, using 775 nm fs pulses. The resulting photoisomer has a λmax = 582 nm. The kinetic rate constant for the isomerization reaction was measured at two different intensities (two different powers), showing a quadratic dependence with respect to the pump intensity. Results of pump-probe solution phase experiments and guest/host polymer thin film interferometric imaging studies are shown. A two-photon absorption molecular cross-section σ2 = 10.3×10-48 cm4·s/photon was measured using Z-scan, supporting a two-photon induced isomerization process.

Publication Date

1-1-2000

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

4104

Number of Pages

15-22

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.406480

Socpus ID

0034512433 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0034512433

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