Dislocation mechanism of excitation of high-temperature photorefraction in DKDP

Anikeev, Boris V.; Gurkin, Oleg A.; Белоненко, М. Б.

doi:10.1117/12.131782

Cited by 3 publications

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“…In experiments the life time ofthe phase grating in the KDP was iO 5. This value is in well agreement with the relaxation time of the PR slow component [1]. The energy of the pulse laser radiation in experiments with injection was -1 J/cin2 that is less than threshold of the PR slow component excitation caused by the dislocational process [ 1].…”

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confidence: 74%

<title>Demonstrations of phase grating recording in KD*P at room temperature</title>

et al. 1998

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It is presented the results of two experiments for excitation of dynamic phase grating in the photorefractive KDP ciystal putted in the cavity of YAG:Nd3 laser. In the first experiment the control by a spectrum of the pulse laser generation is carried out by an external radiation of YAG:Nd3 CW-laser. It was founded that the influence of the external radiation to a spectrum of the pulse laser generation is existed for a long time after injection switched off. In the second one a passive selection of transversal modes of CW-laser was automatically. It is marked, that in both experiments the energy and the power of radiation are less than the threshold of effective excitation of the dislocation subsystem resulting to photorefraction (PR) in the K[f P crystal at the room temperature. Additional polarizing measurements point to excitation of impurity centers in the KDP crystal.

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confidence: 74%

<title>Demonstrations of phase grating recording in KD*P at room temperature</title>

et al. 1998

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“…Let's also note that the photorefractive response of a crystal has the characteristic time of delay td[3,4]. The tension of breaking off O estimated in this way is of the order of 2 .…”

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<title>Direct observation of photovoltaic current in high-temperature photorefraction in DKDP</title>

2000

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Photovoltaic current in high-temperature photorefractive DKDP crystal is measured directly using the original technique based on the current-to-voltage converter operating in the pulse regime. Theoretical consideration of the mechanisms involved and estimates of the observed values are presented. On the basis of the dislocation model we succeeded to get quantitative agreement with the existing experimental data in the value of photoinduced electrical field as well as in the dynamics ofboth the PR response and the photovoltaic current

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Investigation of a nonlinear multicomponent medium of a laser with controlled external feedback

Anikeev

Sin'ko

1997

Quantum Electron.

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Recent applications in queuing theory and statistical mechanics have isolated the process formed by the eigenvalues of successive sub-matrices of the GUE. Analogous eigenvalue processes, formed in general from the eigenvalues of nested sequences of matrices resulting from random corank-1 projections of classical random matrix ensembles, are identified for the LUE and JUE. The correlations for all these processes can be computed in a unified way. The resulting expressions can then be analyzed in various scaling limits. At the soft edge, with the rank of the sub-matrices differing by an amount proportional to N 2/3 , the scaled correlations coincide with those known from the soft edge scaling of the Dyson Brownian motion model.

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Dislocation mechanism of excitation of high-temperature photorefraction in DKDP

Cited by 3 publications

References 1 publication

<title>Demonstrations of phase grating recording in KD*P at room temperature</title>

<title>Demonstrations of phase grating recording in KD*P at room temperature</title>

<title>Direct observation of photovoltaic current in high-temperature photorefraction in DKDP</title>

Investigation of a nonlinear multicomponent medium of a laser with controlled external feedback

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