Posts

Regarding dark port power

The power we are getting at the dark port is of the order Watts, not microW. If we change any parameters like the radius of curvatures or the lengths of the cavities, this affects the stability of the cavities as well as mode matching and that is why it’s not desirable to tweak these paramters […]

Question: Regarding length of the PRC.

I tried to optimise the power in the PRC in the plane wave approximation by varying the total length of the cavity and I am getting peaks at somewhere around 321m and 304m. Now, as I understand it, these are peaks are where both the 9MHz and 45MHz side bands are resonant. Do we use […]

Question Regarding Homodyne detector

In the notebook MichToLigo, a homodyne detector was used to measure the quantum noise limited sensitivity. And that’s where squeezing was used to reduce the quantum noise. However, in the notebook MichelsonSensitivity, the command qnoised was used to measure the quantum noise limited sensitivity. Which one of these methods should we use to find the […]