Questions tagged [laser-cavity]
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Would the use of LIPC's for Lasers avoid eye damage for bystanders?
Laser Induced Plasma Channels (LIPC) can create a tunnel of plasma in the air for a brief moment (milliseconds). But the formation of a LIPC is a process and not something instantaneous when it comes ...
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How laser gain bandwidth is calculated?
I was reading about mode-locking from Wikipedia and there is an explanation of cavity modes. The following sentence confuses me:
For example, a typical helium–neon laser has a gain bandwidth of about ...
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Round-trip equations of fields in a cavity with nonlinear medium (SPDC)
I'm having a lot of trouble trying to understand a set of equations corresponding to the dynamic of field operators of the signal and idler beam in a cavity where one places a non-linear crystal. The ...
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Which method of laser diode operation is less likely to cause mode hopping: constant current or constant power?
If a laser diode is uncolled and operates in a CW mode then which method of operation is less likely to cause mode hopping: constant current or constant power?
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Does the beam image invert on each round-trip through a hemispherical laser cavity?
When one creates a hemispherical laser cavity, using one flat and one concave mirror, does the beam image invert each time it makes a round trip? I know when passing through the focus of a lens/mirror,...
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Compensation of polarization-dependend frequency offset of a passive optical cavity
I have a passive optical cavity used as an OPO for the generation of squeezed states in pulsed regime, schematized in the following figure.
The crystal used to generate squeezing is a KDP (C1), which ...
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Why some laser diodes have angled window?
Why some laser diodes have angled window? Here is an example
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Why open cavity decrease the number of oscillating modes?
Number of modes inside a cavity for laser action is proportional to the volume now if I open the sides of the cavity then volume of the cavity becomes infinite so number of mode actually increase.......
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The Stark-Lo Surdo effect
What does the Stark-Lo Surdo effect consist of in the interaction of the electromagnetic field and the active medium in a laser? I thank those who want to give a clear and concise answer.
In my ...
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Reflection spectrum of a triangular cavity
I am struggling to find the expected reflection spectrum of a triangular cavity, both with and without round-trip losses.
This is a simple scheme:
Laser light is being coupled in the cavity through ...
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What is the transverse mode separation in a laser cavity?
I'm currently researching the intermodal distance of transverse and axial modes in optical cavities. But the equation defining the longitudinal separation contains the +- sign, does this imply that ...
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Minimising losses in an optical resonant cavity
I am doing a question and I am asked to calculate the radius of curvature of two identical mirrors at either end of an optical cavity in order to minimise the losses in the cavity. Is the correct ...
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Laser Cavity Power vs. Output Power
I think I read recently that the power inside a semiconductor’s resonator cavity can reach the megawatt level, due to the buildup of standing waves in the gain material, even though the output power ...
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Is there a connection between the differential gain and the spontaneous emission factor $\beta$ in semiconductor lasers?
The section below is from the paper
G. Bjork and Y. Yamamoto, "Analysis of semiconductor microcavity lasers using rate equations," in IEEE Journal of Quantum Electronics, vol. 27, no. 11, pp....
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How are frequency combs obeying the energy conservation?
The operational principle of frequency combs is that you generate very short pulses (in time domain), and that in the frequency domain (due to Fourier's transform) the spectrum of such pulses is a ...
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