2013/01/31 by John G. Hartnett, S. R. Parker, Hartnett, John G. +13
Chemistry · Physics and Astronomy · #Advanced Fiber Laser Technologies #Advanced Frequency and Time Standards #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Spectroscopy and Laser Applications #physics.ins-det
paper · pdf · doi:10.48550/arxiv.1302.0283
8 pages, 8 figures. arXiv admin note: text overlap with arXiv:1209.1034
openalex publication_date 2013/01/31 · arxiv created 2013/02/01 · arxiv updated 2013/02/05 · openalex created_date 2022/10/01 · openalex updated_date 2026/07/28
The phase noise and frequency stability measurements of 1 GHz, 100 MHz, and 10 MHz signals are presented which have been synthesized from microwave cryogenic sapphire oscillators using ultra-low-vibration pulse-tube cryocooler technology. We present the measured data using independent cryogenic oscillators for the 100 MHz and 10 MHz synthesized signals, whereas previously we only estimated the expected results based on residual phase noise measurements, when only one cryogenic oscillator was available. In addition we present the design of a 1 GHz synthesizer using a Crystek voltage controlled oscillator phase locked to 1 GHz output derived from a cryogenic sapphire oscillator.