Resonance enhancement of two-photon absorption of phthalocyanines for 3D optical storage in the presence of hot-band absorption

Nikolay Makarov; Mikhail Drobizhev; Aleksander Rebane; Desiree Peone; Heinz Wolleb; Heinz Spahni; Elena A. Makarova; Evgeny A. Lukyanets

doi:10.1117/12.696970

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8 February 2007 Resonance enhancement of two-photon absorption of phthalocyanines for 3D optical storage in the presence of hot-band absorption

Nikolay Makarov, Mikhail Drobizhev, Aleksander Rebane, Desiree Peone, Heinz Wolleb, Heinz Spahni, Elena A. Makarova, Evgeny A. Lukyanets

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Proceedings Volume 6470, Organic Photonic Materials and Devices IX; 64700R (2007) https://doi.org/10.1117/12.696970
Event: Integrated Optoelectronic Devices 2007, 2007, San Jose, California, United States

Abstract

We study a new series of asymmetrical phthalocyanines with promising properties for two-photon 3D optical memory. The chromophores have a strong and narrow one-photon absorption (1PA) S₀ -> S₁ band at 730-760 nm, with a 200-400 cm^-1 width. Tuning the laser frequency 500-1000 cm^-1 below the S₀ -> S₁ band allows for very high values of two-photon absorption (2PA) cross-section &sgr;2 > 10⁴ GM. At temperatures T < 110K the molecules can be switched between two tautomer forms by 2PA. We measure 2PA spectra as a function of frequency and sample temperature. We provide an analysis of changes in 2PA spectra and cross sections due to different substituent groups. As a result, we found that among the set of studied molecules, there is one which is the most promising for rewritable 3D optical memory.

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Nikolay Makarov, Mikhail Drobizhev, Aleksander Rebane, Desiree Peone, Heinz Wolleb, Heinz Spahni, Elena A. Makarova, and Evgeny A. Lukyanets "Resonance enhancement of two-photon absorption of phthalocyanines for 3D optical storage in the presence of hot-band absorption", Proc. SPIE 6470, Organic Photonic Materials and Devices IX, 64700R (8 February 2007); https://doi.org/10.1117/12.696970

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