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Journal article

Indirect observation of phase conjugate magnons from non-degenerate four-wave mixing

Abstract:

A phase conjugate mirror utilising four-wave mixing in a magnetic system is experimentally realised for the first time. Indirect evidence of continuous-wave phase conjugation has been observed experimentally and is supported by simulations. The experiment utilises a pump-probe method to excite a four-wave mixing process. Two antennae are used to pump a region of a thin-film yttrium iron garnet waveguide with magnons of frequency f1 to create a spatio-temporally periodic potential. As the probe magnons of fp impinge on the pumped region, a signal with frequency fc=2f1−fp is observed. The amplitude of the nonlinear signal was highly dependent on the applied magnetic field H. Width modes of the probe magnons and standing wave modes of the pump magnons were shown to affect the amplitude of the signal at fc . Experimental data are compared with simulations and theory to suggest that fc is a phase conjugate of fp .

Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1007/s42452-019-0500-x

Authors


More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Oxford college:
Magdalen College
Role:
Author
ORCID:
0000-0001-6371-6047
More by this author
Role:
Author
ORCID:
0000-0001-5277-3839


Publisher:
Springer Nature
Journal:
SN Applied Sciences More from this journal
Volume:
1
Issue:
5
Pages:
480-485
Publication date:
2019-04-20
Acceptance date:
2019-04-13
DOI:
EISSN:
2523-3971
ISSN:
2523-3963


Language:
English
Keywords:
Pubs id:
pubs:1025294
UUID:
uuid:47c8e5f0-1476-48ae-9751-396accf5ab18
Local pid:
pubs:1025294
Source identifiers:
1025294
Deposit date:
2019-07-01

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