All-optical power limiting of CO2 laser pulses using cascaded optical bistable elements

Walker, A. C.; Kar, A. K.; Ji, Wei; Keller, U.; Smith, S. D.
March 1986
Applied Physics Letters;3/17/1986, Vol. 48 Issue 11, p683
Academic Journal
We report the first all-optical power limiter based on cascaded InSb étalons. The power limiting effect is due to a dispersive nonlinearity in InSb at room temperature as a result of generation of free carriers through two-photon absorption of 10 μm radiation. The efficiency and dynamic range of this all-optical circuit are discussed.


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