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We report on the storage and nonresonant parametric recovery of microwave signals carried by a dipolar surface spin-wave pulse in a thin ferrimagnetic film. The information about the intensity of the spectral components of the signal within a narrow frequency band is saved due to the excitation of a dipolar-exchange standing spin-wave mode across the film thickness and is afterward restored by means of parametric amplification of this mode. The intensity of the restored signal measured for varying shifts between the signal carrier frequency and half of the pumping frequency, which is equal to the frequency of the standing mode, reveals information about the entire frequency spectrum of the input microwave signal.
Published in:
Applied Physics Letters
(Volume:92
,
Issue:
16
)
Date of Publication: Apr 2008
- Page(s):
- 162514 - 162514-3
- ISSN :
- 0003-6951
- Digital Object Identifier :
- 10.1063/1.2917590
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 18 June 2009
- Issue Date :
- Apr 2008
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