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Optically Unstable Phase from Ion-Ion Interactions in an Erbium-Doped Crystal
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- Chen, Yu Hui (author)
- University of Otago,Beijing Institute of Technology
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- Horvath, Sebastian P. (author)
- Lund University,Lunds universitet,Atomfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Atomic Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,University of Otago
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- Longdell, Jevon J. (author)
- University of Otago
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- (creator_code:org_t)
- 2021
- 2021
- English.
- In: Physical Review Letters. - 0031-9007. ; 126:11
- Journal article (peer-reviewed)
Abstract
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- Optical many-body systems naturally possess strong light-matter interactions and are thus of central importance for photonic applications. However, these applications are so far limited within the regime of intrinsic dynamically stable phases, and the possibility of unstable phases remains unidentified. Here we experimentally revealed a new dynamical phase of intrinsic optical instability by using a continuous-wave laser to drive an erbium-doped crystal. The transmission through the sample became unstable for intense laser inputs, and transient net gain was observed if the light passed the sample twice. The phase transition, between states in and out of a dynamical equilibrium, was induced by the dipole-dipole interactions between nearby erbium ions.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
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