I’m working on a Rubidium-based EIT slow light experiment using a single CW ECDL at 780 nm. I want to generate the probe and control beams via phase modulation using a fiber-coupled EOM at ~3.035 GHz. This method is commonly reported in the literature, but I’ve found that many of the practical aspects are rarely discussed in detail.

I’d appreciate any idea or shared experience on the following issues:

• Sideband selection: What are effective ways to isolate a single sideband (e.g., +1) for use as a probe and carrier as a control beam?
• Switching the control beam: During the storage interval, I need to turn off the control beam cleanly and switch it back on for retrieval. What are the best methods to achieve it?