نتایج جستجو برای: birefringence
تعداد نتایج: 4097 فیلتر نتایج به سال:
We present an optomechanical method to tune phase and group birefringence in parallel silicon strip waveguides. We first calculate the deformation of suspended, parallel strip waveguides due to optical forces. We optimize the frequency and polarization of the pump light to obtain a 9 nm deformation for an optical power of 20 mW. Widely tunable phase and group birefringence can be achieved by va...
We calculate the emission spectrum for vacuum Cerenkov radiation in Lorentz-violating extensions of electrodynamics. We develop an approach that works equally well if the presence or the absence of birefringence. In addition to confirming earlier work, we present the first calculation of the Cerenkov spectrum in the presence of a birefringent photon kF term. 1 [email protected]
We report the first results on linear birefringence studies of dimeric crystals. The compounds investigated were CuX2.2TMS0, X = Br, C1, two Heisenberg S = 112 antiferromagnetic dimers. The exchange constants derived from the birefringenc data are J (Br) /k = -23.0 K and J (Cl) /k = -13.0 K, in good agreement with previous estimates. This study demonstrates the feasibility of using birefringenc...
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