TY - JOUR AU - W. Zhang AU - J. Robinson AU - Lindsay Sonderhouse AU - Eric Oelker AU - Craig Benko AU - John Hall AU - Thomas Legero AU - Dan-Gheorghita Matei AU - Fritz Riehle AU - Uwe Sterr AU - Jun Ye BT - Physical Review Letters DA - 2017-12 DO - 10.1103/PhysRevLett.119.243601 PY - 2017 EP - 243601 T2 - Physical Review Letters TI - Ultrastable Silicon Cavity in a Continuously Operating Closed-Cycle Cryostat at 4 K UR - https://link.aps.org/doi/10.1103/PhysRevLett.119.243601 VL - 119 SN - 0031-9007 ER -