Understanding the Phase Shift Formula in Stimulated Brillouin Scattering

AI Thread Summary
The discussion focuses on the phase shift formula in stimulated Brillouin scattering, specifically regarding the role of the imaginary part of the complex gain. Participants seek clarification on whether there are additional coefficients beyond the power over effective area (go) that influence the phase shift. There is also inquiry about the effective length's relationship to this constant. The conversation emphasizes the need for a deeper understanding of how various factors interact with the imaginary part of the complex gain. Overall, the thread highlights the complexity of the topic and the desire for more precise information.
eahaidar
Messages
69
Reaction score
1
Good morning
I need to ask about the exact formula for the phase shift used in stimulated Brillouin scattering especially in the phase shifter thank you
 
Science news on Phys.org
What have you already found? This is a pretty broad topic.
 
UltrafastPED said:
What have you already found? This is a pretty broad topic.
What I know is usually the imaginary part of the complex gain but I really want to know that there is a coefficient other than go which is power over effective area
I need to know if also the effective length is also multiplied to this constant
 
Which books are you using?
 
What I know from any book that you derive from the complex gain the real and imaginary part
The imaginary part is related to the phase but I need to know what factors multipled to this imaginary part??
 
Thread 'A quartet of epi-illumination methods'

Thread 'A quartet of epi-illumination methods'

Well, it took almost 20 years (!!!), but I finally obtained a set of epi-phase microscope objectives (Zeiss). The principles of epi-phase contrast is nearly identical to transillumination phase contrast, but the phase ring is a 1/8 wave retarder rather than a 1/4 wave retarder (because with epi-illumination, the light passes through the ring twice). This method was popular only for a very short period of time before epi-DIC (differential interference contrast) became widely available. So...
View full post »

Thread 'Effective absorption coefficient of gold nanoparticles'

I am currently undertaking a research internship where I am modelling the heating of silicon wafers with a 515 nm femtosecond laser. In order to increase the absorption of the laser into the oxide layer on top of the wafer it was suggested we use gold nanoparticles. I was tasked with modelling the optical properties of a 5nm gold nanoparticle, in particular the absorption cross section, using COMSOL Multiphysics. My model seems to be getting correct values for the absorption coefficient and...
View full post »

Similar threads

Stimulated Brillouin scattering inside an optical fiber
Replies
9
Views
2K
I Photodetector Output & Refractive Index of FO Cladding/Coating
Replies
1
Views
2K
I Digital Micromirror Device based optical setup
Replies
7
Views
1K
I Mie scattering in clouds at 940 nm
Replies
29
Views
1K
Cross Phase Modulation in Optical Fibers (Fiber Optics)
Replies
1
Views
2K
Connect: Coupling Light from 2 LEDs into a Single Fiber
Replies
2
Views
3K
I Sagnac Interferometer (Fiber Gyro)
Replies
1
Views
2K
A How to compute phase gradient from Snell's law?
Replies
1
Views
2K
Dark fiber optic cables as Earthquake detectors
Replies
9
Views
2K
B Is this material is good for fiber optics and who would buy it?
Replies
2
Views
2K

Hot Threads

Recent Insights

Back
Top