2,603 reputation
1225
bio website nl.linkedin.com/in/…
location Canada
age 32
visits member for 4 years
seen Nov 23 at 21:22

Feb
23
comment Optical trapping problem
You've got the wrong idea about optical trapping. Or perhaps you're referring to something I've never heard of? Can you elaborate?
Feb
9
awarded  Tumbleweed
Jan
28
answered How to determine real part of optical conductivity by reflectivity measurements?
Jan
27
comment Spectral luminous efficiency as a function of wavelength
Do you have a reliable source for that?
Jan
4
comment Why doesn't my pinhole camera work?
+1 for doing your own experiment though!
Dec
6
awarded  Enlightened
Dec
6
awarded  Nice Answer
Dec
4
answered Angle of rays leaving a light source
Dec
4
awarded  Constituent
Nov
27
awarded  Caucus
Nov
20
awarded  optics
Nov
19
revised Photon energy - momentum in matter
expanded answer to include Abraham-Minkowski controversy and microscopic picture
Nov
19
comment Photon energy - momentum in matter
actually, three: 1) $p=\hbar k$ is only valid for a photon in a plane wave mode, which people usually gloss over; 2) saying that phase matching is due to conservation of momentum is not accurate, despite it being popular to say in nonlinear optics; 3) of course you are right that the photon is traveling mostly in vacuum and so has $p=h\nu/c$; but that expression is useless at the scale of macroscopic dielectric media.
Nov
19
comment Photon energy - momentum in matter
I've thought and discussed about it some more and come to two insights:
Nov
19
comment Photon energy - momentum in matter
Indeed, the Abraham-Minkowski controversy is divided between whether the momentum of a single photon is larger or smaller in a dielectric, but it certainly doesn't stay the same!
Nov
19
comment Photon energy - momentum in matter
@MarkMitchison I'm aware that photons appearing to travel slower in water is purely due to averaging. However, the momentum of a single photon is h-bar times the wave vector, and the wave vector's magnitude is larger in a denser medium with a slower speed of light. This is how phase matching works in nonlinear optics - conservation of momentum. Also, surface plasmon resonance excitation mechanisms (such as the Kretschmann configuration) are explained by different photon momenta in different materials.
Nov
18
answered Photon energy - momentum in matter
Nov
2
awarded  Yearling
Nov
2
comment Are circular polarizations a basis for any light polarization?
In or out of the plane of reflection when reflecting off a surface: en.wikipedia.org/wiki/…
Nov
2
comment Are circular polarizations a basis for any light polarization?
I think if you see people using TM and TE to mean s and p polarization, it's probably wrong (although I admit to having done this myself in the past.)