This article is cited in 14 papers

Nonlinear optical phenomena

Two-photon absorption cross section of aluminium phthalocyanine excited by a femtosecond Ti:sapphire laser

Yu. P. Meshalkin^ab, S. S. Chunosova<sup>c

a</sup> Novosibirsk State Technical University
^b Research Institute of Physiology, Russian Academy of Medical Sciences, Siberian Branch, Novosibirsk
^c Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk

Abstract: The two-photon absorption (TPA) cross section is measured to be 543±16 GM for aluminium phthalocyanine excited by a femtosecond Ti:sapphire laser. The TPA cross section at the Ti:sapphire laser wavelength of 800 nm exceeds by more than 40 times the TPA cross section measured earlier at the Nd:YAG laser wavelength of 1064 nm. The role of the resonance TPA enhancement caused by the presence of the real 14815-cm^-1 S_1u level near the virtual 12594-cm^-1 level in phthalocyanine is discussed.

PACS: 33.80.-b, 42.65.Re, 87.54.Fj

Received: 26.10.2004
Revised: 05.05.2005

 English version: Quantum Electronics, 2005, 35:6, 527–530

Bibliographic databases:

• 
•