Ultrafast terahertz gating of the polarization and giant nonlinear optical response in BiFeO3 thin films
- SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., Stanford, CA (United States)
- Univ. of Pennsylvania, Philadelphia, PA (United States)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Univ. of California, Berkeley, CA (United States)
- Argonne National Lab. (ANL), Lemont, IL (United States)
- Univ. of Maryland, College Park, MD (United States)
- Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
In this article, terahertz pulses are applied as an all-optical bias to ferroelectric thin-film BiFeO3 while monitoring the time-dependent ferroelectric polarization through its nonlinear optical response. Modulations in the intensity of the second harmonic light generated by the film correspond to on–off ratios of 220 × gateable on femtosecond timescales. Polarization modulations comparable to the built-in static polarization are observed.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-76SF00515; AC02-06CH11357
- OSTI ID:
- 1212283
- Alternate ID(s):
- OSTI ID: 1245025
- Report Number(s):
- SLAC-PUB-16380
- Journal Information:
- Advanced Materials, Vol. 27, Issue 41; ISSN 0935-9648
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 40 works
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