Main Laser Upgrade:
- Keep existing NPRO (save time in laser commissioning)
- Use Neolase amplifier from LLO
- That requires the amp + diode box + fibers + chiller + controller
- There will be some issues with setting up the Beckhoff to run this in this standalone configuration.
- Need to figure out where the chiller and diode box will sit.
- Need to figure out how to do the CDS interface
Old (early 2020) upgrade idea
We want to replace the 2W Innolight NPRO with a fast, low noise laser solution.
- Rio Planex as master Osc
- fiber EOM for fast phase/frequency modulation (incl the PMC sidebands)
- 1064 nm fiber amplifier
- some output optics to go into the free-space PMC that we already have
For investigating Poonderomotive effects, we may need ~100 kW circulating in the arm cavities. For this, we --are-- were looking at getting an amplifier to boost the 1 W input we have right now. Now we have decided to go with the following setup:
RIO Planex (1064 nm) as master oscillator; output ~ 20 mW, see datasheets.
- Commercial (Thorlabs) temperature controller
- Thorlabs butterfly package
- How to package for low acoustic sensitivity?
- Use the latest version of Johannes/Luis/Rich diode driver for driving the current and locking to the IMC. Make sure to order 2 units from Luis.
- Need fiber to free space thing with low AR / good polish
- Fiber based PM for locking to IMC w/ high bandwidth.
- Fiber based AM for intensity servo
1-2 stage CW fiber amp to take us to > 20 W