Longitudinally two-photon pumped leaky waveguide dye film laser

He, Guang S.; Signorini, Raffaella; Prasad, Paras N.

doi:10.1109/3.655001

Cited by 37 publications

(10 citation statements)

References 42 publications

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“…This momentum is essentially prompted by a number of very promising applications that include TPA-based optical limiting and stabilization, 1-6 two-photon-pumped frequency-upconverted lasing, [7][8][9][10][11] TPA-based scanning microscopy and imaging, [12][13][14][15][16][17] TPA-based data storage and processing, 18 -21 and TPA-based photodynamic therapy. [22][23][24] During this period, a multitude of new organic chromophores have been reported, which possess much higher TPA cross-section values than the commonly known commercial organic dyes.…”

Section: Introductionmentioning

confidence: 99%

Degenerate two-photon-absorption spectral studies of highly two-photon active organic chromophores

Lin

Dai

et al. 2004

The Journal of Chemical Physics

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Degenerate two-photon absorption (TPA) spectral properties of five AFX chromophore solutions have been studied using a single and spectrally dispersed sub-picosecond white-light continuum beam. In a specially designed optical configuration, optical pathways inside the sample solution for different spectral components of the focused continuum beam were spatially separated from each other. Thus, the nondegenerate TPA processes coming from different spectral components can be eliminated, and the direct nonlinear absorption spectrum attributed to degenerate TPA processes can be readily obtained. Using this new technique, the complete TPA spectra for these five highly two-photon-active compounds (AF-380, AF-350, AF-295, AF-270, and AF-50) were obtained in the spectral range from 600 to 950 nm on an absolute scale of TPA cross section. The relationship between the molecular structures and their TPA spectral behaviors are discussed. In general the measured TPA spectra are not identical with the linear absorption spectra on the scale of absorbed photon(s) energy. Moreover, for some sample (such as AF-380), the TPA spectrum is totally different from the linear spectrum, which implies the difference of molecular transition pathways and selection rules for one- and two-photon excitation processes. At high excitation intensity levels (>or=15 GW/cm(2)), the saturation behavior of TPA transition can be observed obviously in AF-350 and AF-380 solutions that exhibit much higher nonlinear absorptivity than the other chromophores investigated.

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Section: Introductionmentioning

confidence: 99%

Degenerate two-photon-absorption spectral studies of highly two-photon active organic chromophores

Lin

Dai

et al. 2004

The Journal of Chemical Physics

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“…Different from second harmonic based frequency up-conversion, TPA is a third order nonlinear optical process, and has no limitation on molecular centrosymmetry. Recently, a number of organic dyes exhibiting large TPA cross sections and strong frequency upconversion emissions have been synthesized, and a considerable amount of effort has been devoted to the frequency up-conversion laser materials and devices, [8][9][10][11][12][13][14] where one can get a broad range of the visible lasing by pumping at longer wavelengths.…”

Section: Introductionmentioning

confidence: 99%

Two-photon pumped frequency up-converted lasing properties of a new material DEASMPI

Chun

2001

Opt. Eng

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A new dye styryl]-Nmethylpyridinium iodide (abbreviated as DEASMPI) has been synthesized. The two-photon absorption (TPA), TPA-induced frequency upconversion emission, and two-photon pumped (TPP) frequency upconverted lasing properties of this new dye have also been experimentally studied. This new dye has a moderate TPA cross section of 2 ϭ6.9ϫ10 Ϫ48 cm 4 •s/photon at 1064 nm, but exhibits a high lasing efficiency. The net conversion efficiency from the absorbed 1064-nm pump pulse energy to the 628-nm up-converted lasing energy is 3.2% at the pump energy level of 3 mJ.

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“…5 Technologically separated from H-PDLCs, a number of dye compounds have been developed in the recent decade, which can be used as highly efficient two-photon-pumped ͑TPP͒ lasing materials. [6][7][8][9][10][11] So far, most reports of TPP lasing were based on a fixed lasing wavelength for a given dyeactivated gain medium, which usually provided a spectral linewidth of 14 -20 nm for cavityless lasing or 10-15 nm for cavity lasing without using a grating as dispersion element.…”

mentioning

confidence: 99%

Tunable two-photon pumped lasing using a holographic polymer-dispersed liquid-crystal grating as a distributed feedback element

Lin

Hsiao

et al. 2003

Applied Physics Letters

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A holographic polymer-dispersed liquid-crystal (H-PDLC) grating film was employed as an angle-dependent and narrow spectral-band feedback control element for two-photon pumped lasing in a dye solution, 4-[N-(2-hydroxyethyl)-N-(methyl)amino phenyl]-4′-(6-hydroxyhexyl sulfonyl) stilbene (APSS) in dimethyl sulphoxide. The grating film contained about 80 layers of liquid-crystal domains periodically dispersed in an ∼15 μm thick polymer film, featuring a maximum reflectance of 75% at 561 nm position with an ∼9 nm spectral bandwidth. The output lasing wavelength could be tuned from 561.5 to 548.5 nm and the lasing bandwidth changed from 5 to 3 nm when the incidence angle on the grating film varied from 0° to 22°. The overall lasing efficiency was measured to be 10%.

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Longitudinally two-photon pumped leaky waveguide dye film laser

Cited by 37 publications

References 42 publications

Degenerate two-photon-absorption spectral studies of highly two-photon active organic chromophores

Degenerate two-photon-absorption spectral studies of highly two-photon active organic chromophores

Two-photon pumped frequency up-converted lasing properties of a new material DEASMPI

Tunable two-photon pumped lasing using a holographic polymer-dispersed liquid-crystal grating as a distributed feedback element

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