Enhanced optical limiting effects in a double-decker bis(phthalocyaninato) rare earth complex using radially polarized beams

Journal Article · Mon Oct 27 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4901007· OSTI ID:22310647

Wu, Jia-Lu; Gu, Bing; Liu, Dahui; Cui, Yiping ^[1]; Sheng, Ning ^[1]

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1. Advanced Photonics Center, Southeast University, Nanjing 210096 (China)

Optical limiting (OL) effects can be enhanced by exploiting various limiting mechanisms and by designing nonlinear optical materials. In this work, we present the large enhancement of OL effects by manipulating the polarization distribution of the light field. Theoretically, we develop the Z-scan and nonlinear transmission theories on a two-photon absorber under the excitation of cylindrical vector beams. It is shown that both the sensitivity of Z-scan technique and the OL effect using radially polarized beams have the large enhancement compared with that using linearly polarized beams (LPBs). Experimentally, we investigate the nonlinear absorption properties of a double-decker Pr[Pc(OC{sub 8}H{sub 17}){sub 8}]{sub 2} rare earth complex by performing Z-scan measurements with femtosecond-pulsed radially polarized beams at 800 nm wavelength. The observed two-photon absorption process, which originates from strong intramolecular π–π interaction, is exploited for OL application. The results demonstrate the large enhancement of OL effects using radially polarized beams instead of LPBs.

• OSTI ID: 22310647
• Journal Information: Applied Physics Letters, Vol. 105, Issue 17; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION
COMPUTERIZED SIMULATION
CYLINDRICAL CONFIGURATION
DISTRIBUTION
EXCITATION
INTERACTIONS
NONLINEAR PROBLEMS
OPTICAL PROPERTIES
POLARIZATION
POLARIZED BEAMS
PULSES
RARE EARTH COMPLEXES
SENSITIVITY
TRANSMISSION
VISIBLE RADIATION
WAVELENGTHS