Phase conjugation of broad-band laser pulses in BaTio3

A new scheme for high-efficiency phase conjugation of broadband laser radiation in photorefractive crystals is proposed. The scheme utilizes a dispersive '2-f' system for decoupling of the photo-induced index gratings written by the different frequency components. Self-pumped phase conjuga...

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Bibliographic Details
Published in:Journal of modern optics 1998-01, Vol.45 (1), p.5-9
Main Authors: Danailov, M. B., Diomande, K., Apai, P., Szipõcs, R.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Nonlinear optics
Optics
Phase conjugation, optical mixing, and photorefractive effect
Phase conjugation, optical mixing
photorefractive and kerr effects
Physics
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Summary:A new scheme for high-efficiency phase conjugation of broadband laser radiation in photorefractive crystals is proposed. The scheme utilizes a dispersive '2-f' system for decoupling of the photo-induced index gratings written by the different frequency components. Self-pumped phase conjugated reflectivity of 25% have been achieved over bandwidths of tens of nanometres in an undoped BaTiO 3 crystal using broad-spectrum Ti: sapphire laser pulses.
ISSN:0950-0340
1362-3044
DOI:10.1080/09500349808231663