Author:
Hill Joshua C.,Holland William K.,Kunz Paul D.,Cox Kevin C.,Penttinen Jussi-Pekka,Kantola Emmi,Meyer David H.
Abstract
We characterize a VECSEL with intra-cavity frequency conversion and use it to demonstrate 3.5 MHz FWHM Rydberg spectroscopy. The laser emits 690 mW at λ = 475 nm and we measure a pre-doubled linewidth of 2π × 23(2) kHz.