Interaction of modulated lasers

AI Thread Summary
Amplitude modulating a helium-neon laser with a 10 GHz microwave signal can indeed excite a tuned 10 GHz resonant cavity. The modulation of the laser's intensity at this frequency can induce a current within the cavity. This principle aligns with the functioning of cavity-stabilized oscillators, where modulation plays a crucial role. The interaction between the modulated laser and the cavity is expected to produce significant effects. Overall, the concept suggests a viable method for utilizing modulated lasers in resonant cavity applications.
waht
Messages
1,499
Reaction score
4
If you were to amplitude modulate a laser such the helium-neon with a microwave signal for instance at 10 GHz, and if you were to shine that laser into a tuned 10 GHz resonant cavity, would the modulated laser excite the cavity?

That is would the rise and fall of intensity of the laser beam at 10 GHz induce a current in the cavity?
 
Science news on Phys.org
I would hope so- that's how cavity-stabilized oscillators work, IIRC.
 
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

Direct Modulation and Photon Lifetime - Laser
Replies
2
Views
2K
A Question about the EOM used for PDH locking
Replies
0
Views
1K
What Drives Photon Movement in Laser Physics?
Replies
2
Views
1K
A The coherence length is much longer than the manufacturer claims
Replies
10
Views
2K
A IR Laser diode focusing and module selection for CSEL Laser pointer
Replies
6
Views
934
A Broad linewidth continuous wave laser
Replies
4
Views
2K
A Laser signal input for PDH lock
Replies
6
Views
2K
Why Is My Nd:YAG Laser Beam Quality Deteriorating?
Replies
6
Views
2K
I Question about a Servo setup (locking a laser to a cavity)
Replies
21
Views
3K
Converting oscilloscope voltage to laser power
Replies
12
Views
2K

Hot Threads

Recent Insights

Back
Top