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Questions related from Chris Bohr
Why nobody talks about the momentum mismatch of bulk phonon polariton as they do in surface phonon polariton? Thanks!
15 September 2024 8,918 3 View
Hi, I am wondering if anyone who is familiar with Raman spectroscopy/group theory can help me with the displacement of A1g and Eg Raman modes of SrTiO3 in tetragonal phase. Thanks in advance!
21 August 2024 2,764 2 View
Hi guys, I am now using Newport Nirvana balanced photodetector and measuring with a locking at 250 Hz. The background noise (connected to the power supply but with the switch is off) is huge...
01 August 2024 8,577 0 View
Hi guys, I am trying to simulate a 1 ps long plane wave propagating in a dispersive material, with the wave optics transient module. According to the drude-lorentz model, when the frequency of...
30 June 2024 620 1 View
It is hard to find such parameters. I know it can work at least 2 weeks continuously. Has anyone tried longer? really curious about the limit.
28 February 2024 5,031 1 View
Hi, I am recently having an issue to calibrate the quarter waveplate for the electro-optical sampling purpose. I can balance the detector for one polarization (e.g., 0 degree) but then to 45...
08 August 2023 7,467 1 View
It is quite challenging to build a telescope of terahertz beam as it is invisible. Can anyone give some suggestions so that the lab life can be easier?
21 June 2022 9,760 3 View