Low-power-threshold photonic saturable absorber in nonlinear chalcogenide glass
We experimentally demonstrate controllable nonlinear modulation of optical guiding in ultrafast laser-written evanescently coupled waveguide arrays in bulk gallium lanthanum sulfide chalcogenide glass. The intensity-dependent response is validated by simulating light propagation in waveguide arrays...
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| Published in | Optics letters Vol. 40; no. 2; p. 257 |
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| Main Authors | , , , |
| Format | Journal Article |
| Language | English |
| Published |
United States
15.01.2015
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| Online Access | Get more information |
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| Summary: | We experimentally demonstrate controllable nonlinear modulation of optical guiding in ultrafast laser-written evanescently coupled waveguide arrays in bulk gallium lanthanum sulfide chalcogenide glass. The intensity-dependent response is validated by simulating light propagation in waveguide arrays with instantaneous Kerr nonlinearity using a discrete-continuous spatiotemporal unidirectional Maxwell equation model. The intensity-driven modulation of transmission in multicore structures acts as a potential saturable absorber at kilowatt threshold levels. |
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| ISSN: | 1539-4794 |
| DOI: | 10.1364/OL.40.000257 |