Three- and four-photon absorption of a multiphoton absorbing fluorescent probe

Florencio E. Hernández; Kevin D. Belfield; Ion Cohanoschi; Mihaela Balu; Katherine J. Schafer

doi:10.1364/AO.43.005394

Three- and four-photon absorption of a multiphoton absorbing fluorescent probe

Florencio E. Hernández, Kevin D. Belfield, Ion Cohanoschi, Mihaela Balu, Katherine J. Schafer

Research output: Contribution to journal › Article › peer-review

54 Scopus citations

Abstract

High-order multiphoton excitation processes are becoming a reality for fluorescence imaging and phototherapy treatment because they afford minimization of scattered light losses and a reduction of unwanted linear absorption in the living organism transparency window, making them less susceptible to photodamage, while improving the irradiation penetration depth and spatial resolution. We report the four-photon-excited fluorescence emission of (7-benzothiazol-2-yl-9,-didecylfluoren-2-yl)-diphenylamine in hexane and its four-photon absorption cross section σ₄′ = 8.1 × 10^-109 cm⁸ s³ photon^-3 for the transition S₀ → S₁ when excited at 1600 nm with a tunable optical parametric generator (OPG) pumped by picosecond laser pulses. When pumped at 1200 nm, three-photon absorption was observed, corresponding to the same transition.

Original language	English (US)
Pages (from-to)	5394-5398
Number of pages	5
Journal	Applied Optics
Volume	43
Issue number	28
DOIs	https://doi.org/10.1364/AO.43.005394
State	Published - Oct 1 2004
Externally published	Yes

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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10.1364/AO.43.005394

Cite this

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abstract = "High-order multiphoton excitation processes are becoming a reality for fluorescence imaging and phototherapy treatment because they afford minimization of scattered light losses and a reduction of unwanted linear absorption in the living organism transparency window, making them less susceptible to photodamage, while improving the irradiation penetration depth and spatial resolution. We report the four-photon-excited fluorescence emission of (7-benzothiazol-2-yl-9,-didecylfluoren-2-yl)-diphenylamine in hexane and its four-photon absorption cross section σ4′ = 8.1 × 10-109 cm8 s3 photon-3 for the transition S0 → S1 when excited at 1600 nm with a tunable optical parametric generator (OPG) pumped by picosecond laser pulses. When pumped at 1200 nm, three-photon absorption was observed, corresponding to the same transition.",

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AU - Hernández, Florencio E.

AU - Belfield, Kevin D.

AU - Cohanoschi, Ion

AU - Balu, Mihaela

AU - Schafer, Katherine J.

PY - 2004/10/1

Y1 - 2004/10/1

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AB - High-order multiphoton excitation processes are becoming a reality for fluorescence imaging and phototherapy treatment because they afford minimization of scattered light losses and a reduction of unwanted linear absorption in the living organism transparency window, making them less susceptible to photodamage, while improving the irradiation penetration depth and spatial resolution. We report the four-photon-excited fluorescence emission of (7-benzothiazol-2-yl-9,-didecylfluoren-2-yl)-diphenylamine in hexane and its four-photon absorption cross section σ4′ = 8.1 × 10-109 cm8 s3 photon-3 for the transition S0 → S1 when excited at 1600 nm with a tunable optical parametric generator (OPG) pumped by picosecond laser pulses. When pumped at 1200 nm, three-photon absorption was observed, corresponding to the same transition.

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Three- and four-photon absorption of a multiphoton absorbing fluorescent probe

Abstract

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