Sub-dB/m loss integrated 103 and 90 million Q resonators for laser stabilization at rubidium and strontium wavelengths

We report integrated silicon nitride resonators with 0.65 dB/m loss and $90\times10^{6}$ intrinsic Q at 674 nm and 0.5 dB/m loss with $103\times10^{6}$ intrinsic Q at 780 nm. We demonstrate laser stabilization with over two orders magnitude frequency noise reduction.