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International Conference on Ultrafast Phenomena

Amplitude and phase measurements of femtosecond pulses shaped using spectral hole burning in free-base naphthalocyanine-doped films

Sébastien Fraigne, Jean‐Pierre Galaup, J.-L. Le Gouët, M. Joffre, Lionel Canioni, Bruno Bousquet, J.-P. Likforman

Published Jan 1, 2002• 2 citations
Publisher

Abstract

Spatio-temporal holography using persistent spectral hole-burning in dye molecules embedded in plastic films is promising for applications such as femtosecond pulse shaping, data storage or phase conjugation. In addition to the common 2 spatial dimensions of classical holograms, each point in the sample plane can be used to store spectral informations such as the shape of a femtosecond pulse. On each point of the sample, spectral interferences between a reference pulse and an object pulse (for example chirped) are recorded via spectral hole-burning in the absorption band of the dye molecule. As early as 1983, photon echo and time-reversal experiments using persistent spectral hole-burning were performed in porphyrazine styrol solutions at 630 nm [1]. Then several developments, like the reconstruction of the polarization state of object pulses [2], time and space holography [3,4], image holograms using a single pair of femtosecond pulses [5] were demonstrated in different photosensitive media.

DOI
10.1364/up.2002.tue1

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Amplitude and phase measurements of femtosecond pulses shaped by use of spectral hole burning in free-base naphthalocyanine-doped films

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It is acknowledged that inhomogeneous absorption bands consisting of narrow homogeneous zero-phonon lines (ZPL) can be used for the purpose of optical data storage in the frequency dimension /1/. Persistent spectral hole-burning (PSHB) /2,3/ has made it feasible to preserve the recorded frequency domain information for a practically unlimited period of time. Via PSHB the inhomogeneous distribution function of the resonance frequencies of the impurity zero-phonon lines can be altered in an almost arbitrary fashion. This, in turn, makes it possible to manipulate the absorption coefficient and correlated to it index of refraction of the optical storage media. On this basis it has been proposed to use PSHB for the shaping of laser pulses via Fourier synthesis /4/. Holographic storage of time domain optical signals in PSHB media was proposed by Mossberg /5/. In the first experiments on the PSHB time domain holography the reproduction of various temporal shapes of picosecond pulses was demonstrated in dye doped polymers cooled to liquid helium temperature /6/. Earlier Zuikov et al. observed correlation between the temporal shapes of nanosecond excitation laser pulses and photon echo signals /7/. Since that time a variety of experiments on time domain holography in different resonant media have been reported (see /8/ and references therein).

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Alexander Rebane

Time-and-space-domain holography [1,2] can be regarded as an extension of a conventional holographic process, where, in addition to the spatial image, the hologram plays back the time dependence of an event. The play-back of events is possible because we are using highly frequency-selective inhomogeneously broadened absorbers as recording material. This technique has a variety of potential applications in optical data storage and processing. In the present paper we consider the basic physical principle of time-and-space-domain storage in frequency-selective materials which exploit the effect of spectral hole burning [3]. In particular we will show that organic dye-doped spectral hole burning materials allow recording and playback of pi- co- and femtosecond time-scale events.

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Alexander Rebane, Mikhail A. Drobizhev, Christophe Sigel

Summary form only given.Frequency-selective materials, based on spectral hole-burning allow recording holograms and interferograms of spectrally broad-band, temporally incoherent light signals. An important task for information technology as well as spectroscopic applications is simultaneous recording of the temporal, spectral, and spatial characteristics of ultrashort optical signals. Single-shot recording with a spectral hole-burning material will allow us to measure individual time-varying optical amplitudes without involving any temporal or spatial averaging, thus maintaining complete information about an optical signal. We have performed experiments on recording and playback of time- and space-domain holograms using single femtosecond pulses. We have studied the dependence of the hologram recording and playback on both the energy and the number of the applied pulses as well as on photon gating mechanism by an additional laser pulse at a different frequency.

Conference on Lasers and Electro-Optics•Jan 1, 2000•0 citations
Spatio-temporal holography using persistent spectral hole-burning in dye molecules embedded in plastic films is promising for applications such as femtosecond pulse shaping, data storage or phase conjugation. In addition to the common 2 spatial dimensions of classical holograms, each point in the sample plane can be used to store spectral informations such as the shape of a femtosecond pulse. On each point of the sample, spectral interferences between a reference pulse and an object pulse (for example chirped) are recorded via spectral hole-burning in the absorption band of the dye molecule. As early as 1983, photon echo and time-reversal experiments using persistent spectral hole-burning were performed in porphyrazine styrol solutions at 630 nm [1]. Then several developments, like the reconstruction of the polarization state of object pulses [2], time and space holography [3,4], image holograms using a single pair of femtosecond pulses [5] were demonstrated in different photosensitive media.
Persistent spectral hole burning (PSHB) in organic molecules doped in a polymer matrix at low temperatures allows optical recording of information in the dimensions of frequency and time, as well as in space and externally applied electric field. We use this special property to demonstrate new types of holograms, which extend conventional spatial-domain optical data storage into the new dimensions. Basic aspects of recording and playback of holograms by persistent spectral hole burning, including relation between frequency- and time-domain response function, is discussed. This paper is elucidating inherent relations between the time- and frequency-domain versions of PSHB holography. We show that by multiplexing holograms in the frequency dimension, we can store a large number (up to 12 000) of image holograms using a single spectral hole burning sample. In the time domain, we show storage and reproduction of ultrashort time-space images on the scale of 10 -12 −10 -13 s. Experiments demonstrating unusual hologram properties, such as causality-related asymmetry of diffraction, inversion of time coordinate, and ultrafast processing, are presented.
It is acknowledged that inhomogeneous absorption bands consisting of narrow homogeneous zero-phonon lines (ZPL) can be used for the purpose of optical data storage in the frequency dimension /1/. Persistent spectral hole-burning (PSHB) /2,3/ has made it feasible to preserve the recorded frequency domain information for a practically unlimited period of time. Via PSHB the inhomogeneous distribution function of the resonance frequencies of the impurity zero-phonon lines can be altered in an almost arbitrary fashion. This, in turn, makes it possible to manipulate the absorption coefficient and correlated to it index of refraction of the optical storage media. On this basis it has been proposed to use PSHB for the shaping of laser pulses via Fourier synthesis /4/. Holographic storage of time domain optical signals in PSHB media was proposed by Mossberg /5/. In the first experiments on the PSHB time domain holography the reproduction of various temporal shapes of picosecond pulses was demonstrated in dye doped polymers cooled to liquid helium temperature /6/. Earlier Zuikov et al. observed correlation between the temporal shapes of nanosecond excitation laser pulses and photon echo signals /7/. Since that time a variety of experiments on time domain holography in different resonant media have been reported (see /8/ and references therein).
Time-and-space-domain holography [1,2] can be regarded as an extension of a conventional holographic process, where, in addition to the spatial image, the hologram plays back the time dependence of an event. The play-back of events is possible because we are using highly frequency-selective inhomogeneously broadened absorbers as recording material. This technique has a variety of potential applications in optical data storage and processing. In the present paper we consider the basic physical principle of time-and-space-domain storage in frequency-selective materials which exploit the effect of spectral hole burning [3]. In particular we will show that organic dye-doped spectral hole burning materials allow recording and playback of pi- co- and femtosecond time-scale events.
Summary form only given.Frequency-selective materials, based on spectral hole-burning allow recording holograms and interferograms of spectrally broad-band, temporally incoherent light signals. An important task for information technology as well as spectroscopic applications is simultaneous recording of the temporal, spectral, and spatial characteristics of ultrashort optical signals. Single-shot recording with a spectral hole-burning material will allow us to measure individual time-varying optical amplitudes without involving any temporal or spatial averaging, thus maintaining complete information about an optical signal. We have performed experiments on recording and playback of time- and space-domain holograms using single femtosecond pulses. We have studied the dependence of the hologram recording and playback on both the energy and the number of the applied pulses as well as on photon gating mechanism by an additional laser pulse at a different frequency.