High tunability mixed order photonic crystal

Dorjgotov, Enkh-Amgalan; Bhowmik, Achintya K.; Bos, Philip J.
April 2010
Applied Physics Letters;4/19/2010, Vol. 96 Issue 16, p163507
Academic Journal
We propose a design for high tunability one-dimensional photonic-crystal which consists of alternating layers of isotropic material and liquid crystal layers. Numerical models confirm the tunability over the visible region ranging from 480 to 560 nm for a mixed order device using a material birefringence of 0.3, and to 620 nm if a birefringence of 0.6 is allowed. Modeled devices having active layers with mλ/4 and passive layers with nλ/4 thickness for the case of m and n odd integers are presented. The advantage of m>n is shown to be greater tunability for a given free spectral range.


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