Erratum

Greetings. If anyone is still paying attention, I wanted to clarify an error in post "Cutting-edge and Future Saturable Absorbers" originally posted on May 20. I was a little two-photon happy and incorrectly inserted a two-photon absorption process in the electron transition diagram. This has now been corrected. My apologies to author Amir Nevet for this mistake and many thanks to the author for clarifying the correct diagram of the second-order process. Best of luck to the authors developing this work. I know I am looking forward to the day when I can get my hands on a two-photon amplifier. If Nevet et al are taking pre-orders, I'd like mine fiber-coupled!