High−sensitivity optical recording in KTN by two−photon absorption

Birefringence changes are induced in a cubic potassium tantalate niobate crystal with an external electric field by two−photon absorption of picosecond optical pulses. The recording sensitivity of 100 μJ/cm2 for elementary holograms with a few percent reconstruction efficiency is comparable to the s...

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Bibliographic Details
Published in:Applied physics letters 1975-01, Vol.26 (1), p.22-24
Main Authors: von der Linde, D., Glass, A. M., Rodgers, K. F.
Format: Article
Language:English
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Summary:Birefringence changes are induced in a cubic potassium tantalate niobate crystal with an external electric field by two−photon absorption of picosecond optical pulses. The recording sensitivity of 100 μJ/cm2 for elementary holograms with a few percent reconstruction efficiency is comparable to the sensitivity of holographic silver halide emulsions. The high sensitivity of KTN is shown to be due to efficient charge transport of photoexcited carriers.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.87974