Terahertz bit-rate parallel multiplication by photon echo in low-temperature dye-doped polymer film

Ollikainen, O.; Nilsson, Cecilia; Gallus, J.; Erni, Daniel; Rebane, Aleksander

doi:10.1016/s0030-4018(97)00590-7

Cited by 14 publications

(18 citation statements)

References 26 publications

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“…The echo-processing, which as it was shown in [3,4], allows one to realize the logical operations of bit-to-bit multiplication seems to be one of the promising directions. Dye molecules embedded in polymer films are suitable to be used as a resonance medium since they are strongly disordered media and are characterized by wide inhomogeneous absorption band.…”

Section: Introductionmentioning

confidence: 99%

“…In paper [3] it was shown that the parameter of a homogeneous broadening for the polyvinilbutural film doped with phthalocyanine dye at liquid helium temperature is equal to 0.01 cm −1 provided the inhomogeneous Absorbtion D, a.u. (online color at www.lphys.org) Molecular structure and absorption spectra of phtalocyanine dye in polyvinilbutural film measured at 300 K (1) and 10 K (2) [5].…”

Section: Introductionmentioning

confidence: 99%

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Femtosecond echo-processing in a dye-doped polymer film at room temperature

et al. 2009

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Abstract:The possibility to mechanize at room temperature a logical function of bit-to-bit parallel multiplication for optical echo-processor based on the third-order nonlinear optical response of a resonant medium is experimentally studied. The polyvinilbutural film doped with phthalocyanine dye was used as an operating medium in our experiments. The time needed to realize the logical operation, the result of which is presented in the spectrum of the nonlinear optical response of the medium after action of the two spectrally coded pumping pulses, is less than 1 ps. The values of a homogeneous broadening of S 0 -S 1 line Γ hom = 89 cm −1 and Γ hom = 44 cm −1 are established at T = 300 K and T = 77 K respectively. The laser excitation parameters needed for effective operating of optical processor are defined. The maximum word length achievable under current experimental conditions is estimated. The exciting pulses k1, k2 and the optical response kS1 spectra measured at τ 12 = 30 fs

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Femtosecond echo-processing in a dye-doped polymer film at room temperature

et al. 2009

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“…Dye-doped polyvinylbutural films (PVB) are, of course, numbered among such information carriers. The first optical echo-experiments [1,2] in these films were spectroscopic ones. Though the authors of papers [1,2] used femtosecond pulses in their experiments, they did not aim to increase the work temperature of samples above a liquid helium one.…”

Section: Introductionmentioning

confidence: 99%

“…The first optical echo-experiments [1,2] in these films were spectroscopic ones. Though the authors of papers [1,2] used femtosecond pulses in their experiments, they did not aim to increase the work temperature of samples above a liquid helium one. But the authors of paper [3] in semiconductor sample showed that using of femtosecond pulses in optical echo-experiments allow to increase a temperature of investigated samples up to room one and to avoid using of cryostat.…”

Section: Introductionmentioning

confidence: 99%

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Femtosecond photon echo in dye-doped polymer film at room temperature

et al. 2005

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Abstract:The first observation is reported of the primary and stimulated femtosecond photon echoes at liquid nitrogen and room temperatures in a dye-doped polymer film at a wavelength of 780 nm. Echo signals were generated by pulses with the duration of 65 fs. The primary echo signal decay at liquid nitrogen and room temperatures can not be described by a simple exponential function. The decay of primary echo signal at room temperature demonstrates complex behavior caused by the presence of the phonon-side band in the optical band of impurity centers. There were also detected signals of the self-diffraction of exciting pulses on a nonequilibrium population difference grating, induced in resonant medium by these pulses.Photos of "traces" on the screen caused by exciting pulses (strong "traces"), by primary femtosecond photon echo (the upper weak "trace" at the right in photo (a)), stimulated femtosecond photon echo (the lower weak "trace" at the right in photo (a)) and by signals of self-diffruction (weak "tarces" in photo (b))

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Femtosecond photon echo in dye-doped polymer film at liquid nitrogen temperature

et al. 2004

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Abstract:The first observation is reported of the primary femtosecond photon echo at a liquid nitrogen temperature in a dyedoped polymer film at a wavelength of 780 nm. Echo signals were generated by pulses with the duration of 130 fs. The echo signal decay can not be described by a simple exponential function. There is a fast decay region below 250-300 fs and a slow decay region at longer time intervals. There were also detected signals of the self-diffraction of exciting pulses on a nonequilibrium population difference grating, induced in resonant medium by these pulses. Photos of "traces" on the screen caused by exciting pulses, by the PFPE signal and by signals, corresponding to the first order of self-diffraction

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Terahertz bit-rate parallel multiplication by photon echo in low-temperature dye-doped polymer film

Cited by 14 publications

References 26 publications

Femtosecond echo-processing in a dye-doped polymer film at room temperature

Femtosecond echo-processing in a dye-doped polymer film at room temperature

Femtosecond photon echo in dye-doped polymer film at room temperature

Femtosecond photon echo in dye-doped polymer film at liquid nitrogen temperature

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