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Questions related from Ryan Freeman
Hi all, Looking at the wikipedia page for photonic crystals, there is a section that reads: "One-dimensional photonic crystals can include layers of non-linear optical materials in which the...
03 February 2022 3,138 5 View
Cavity modes are a consequence of constructive interference of EM waves in a particular region. It is common knowledge that the (frequency) linewidth of a cavity resonance is broadened by both...
18 December 2019 2,907 6 View
I am aware that due to the properties of spinors, to return a spinor to its initial state by rotation, the spinor must be rotated by 4*pi radians, i.e. rotation by 720 degrees. While I was taught...
05 August 2019 5,959 4 View
The underlying physics behind quantization axes for the electrons spin has never really been clear to me. I saw the Pauli matrices in my quantum courses, but the definition of different principle...
05 August 2019 6,643 3 View
I've got a Tb (terbium) sputtering target that is packed in oil, due to it being reactive with air. What is the best way to remove the oil? I think dissolving the oil is better than simply...
06 July 2018 6,988 3 View
I'm trying to learn more about the Purcell effect and specifically how it relates to surface enhanced raman scattering (SERS). The Purcell effect, or 'modified spontaneous emission' occurs when...
25 June 2018 1,865 5 View
I feel like I've seen several different papers say that ohmic losses in metals become very large at: low frequency, high frequency, and at plasmonic resonances. Are all of these true, or am I...
12 September 2017 5,336 3 View
Split-ring resonators (SRR) are metamaterials whose geometry (shaped like the letter 'C') induces a magnetic response from incident EM radiation. At mm scale, these resonators show a magnetic...
12 September 2017 4,752 3 View
I've read papers about the Rashba effect, Dresselhaus effect, and Dzyalonshinskii-Moriya Interaction but don't understand fundamentally why breaking spatial symmetry is a pre-requisite to see...
24 May 2016 6,103 3 View