M. Mrad, Y. Kersalé, P. Bourgeois, V. Giordano, S. Grop, K. Benmessai, M. Tobar
{"title":"Recent progress on cryogenic MASER oscillator","authors":"M. Mrad, Y. Kersalé, P. Bourgeois, V. Giordano, S. Grop, K. Benmessai, M. Tobar","doi":"10.1109/EFTF.2012.6502339","DOIUrl":"https://doi.org/10.1109/EFTF.2012.6502339","url":null,"abstract":"This paper reports on the comparison of a Cryocooled Sapphire Oscillator with our Cryocooled MASER Oscillator thanks to a home-made synthesis chain. The MASER oscillator demonstrates for the first time a fractional frequency deviation below 6 · 10−15 over 4 s sampling time which is comparable to the conventional CSRO but achieved in a free running environment.","PeriodicalId":6409,"journal":{"name":"2012 European Frequency and Time Forum","volume":"1 1","pages":"83-86"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81908972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Bober, J. Zachorowski, W. Gawlik, P. Morzyński, M. Zawada, D. Lisak, A. Cygan, K. Bielska, M. Piwiński, R. Trawiński, R. Ciuryło, F. Ozimek, C. Radzewicz
{"title":"Towards Polish Optical Clock with Cold Strontium Atoms, present status and performance","authors":"M. Bober, J. Zachorowski, W. Gawlik, P. Morzyński, M. Zawada, D. Lisak, A. Cygan, K. Bielska, M. Piwiński, R. Trawiński, R. Ciuryło, F. Ozimek, C. Radzewicz","doi":"10.1109/EFTF.2012.6502411","DOIUrl":"https://doi.org/10.1109/EFTF.2012.6502411","url":null,"abstract":"We report on the status of the work towards cold strontium clock in the Polish National Laboratory of AMO Physics in Torun. The system consists of: (1) a Zeeman slower and magneto-optical traps (at 461 nm and 689 nm), (2) a frequency comb, and (3) a narrow-band laser coupled to an ultra-stable optical cavity. So far, all parts of the experiment are working and the whole system is tested at the <sup>1</sup>S<inf>0</inf>-<sup>3</sup>P<inf>1</inf>, 689 nm optical transition in <sup>88</sup>Sr atoms with 7 kHz linewidth.","PeriodicalId":6409,"journal":{"name":"2012 European Frequency and Time Forum","volume":"36 1","pages":"400-403"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84420304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A hardware accelerated 10GbE primary NTP-server","authors":"C. Rieck, K. Jaldehag","doi":"10.1109/EFTF.2012.6502408","DOIUrl":"https://doi.org/10.1109/EFTF.2012.6502408","url":null,"abstract":"In this paper we present a primary NTP server design that provides a full line rate packet stream handling with about 50 ns internal timing accuracy independent from packet throughput. The provided solution is replay proof and is intended for NTP services close to backbone of the Internet.","PeriodicalId":6409,"journal":{"name":"2012 European Frequency and Time Forum","volume":"27 1","pages":"387-391"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80085201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
O. Traon, D. Janiaud, J. Guerard, R. Lévy, S. Masson, O. Ducloux, M. Pernice, R. Taibi
{"title":"The fairy world of quartz vibrating MEMS","authors":"O. Traon, D. Janiaud, J. Guerard, R. Lévy, S. Masson, O. Ducloux, M. Pernice, R. Taibi","doi":"10.1109/EFTF.2012.6502370","DOIUrl":"https://doi.org/10.1109/EFTF.2012.6502370","url":null,"abstract":"Quartz crystal has been an essential material for time and frequency and radio-frequency applications during the 20th century. Quartz is always an unmatched material at the beginning of the 21st century, and hold 80 % of oscillators & RF market which represent today 17 billions market with a 10 % growth per year. This paper describes other more confidential applications - the vibrating inertial MEMS - where the quartz crystal plays also a major role. Clearly, quartz crystal has still a future in these high added value applications, and for a long time.","PeriodicalId":6409,"journal":{"name":"2012 European Frequency and Time Forum","volume":"127 1","pages":"214-220"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73383807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Tobar, D. Creedon, M. Goryachev, K. Benmessai, J. Le Floch, E. Ivanov, W. Bowen, S. Galliou, R. Bourquin
{"title":"Some future applications of cryogenic high-Q resonant cavities","authors":"M. Tobar, D. Creedon, M. Goryachev, K. Benmessai, J. Le Floch, E. Ivanov, W. Bowen, S. Galliou, R. Bourquin","doi":"10.1109/EFTF.2012.6502320","DOIUrl":"https://doi.org/10.1109/EFTF.2012.6502320","url":null,"abstract":"Some future applications for high-Q resonant cavities at cryogenic temperatures lie in the discipline of hybrid quantum systems. In this paper we review our recent work in this discipline, which investigates spins in sapphire resonators and the unique property of quartz at low temperatures.","PeriodicalId":6409,"journal":{"name":"2012 European Frequency and Time Forum","volume":"29 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74787262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
I. Blinov, Y. Domnin, S. Donchenko, N. Koshelyaevsky, V. Kostromin
{"title":"Progress at the State Time and Frequency Standard of Russia","authors":"I. Blinov, Y. Domnin, S. Donchenko, N. Koshelyaevsky, V. Kostromin","doi":"10.1109/EFTF.2012.6502353","DOIUrl":"https://doi.org/10.1109/EFTF.2012.6502353","url":null,"abstract":"The paper presents results of development programs just finished in VNIIFTRI. Some of them, such as CS fountain standard, ensemble of new H-masers and TWSTFT station, directly improved the State Time and Frequency Standard of Russia, the influence of other are expected in closest future.","PeriodicalId":6409,"journal":{"name":"2012 European Frequency and Time Forum","volume":"1 1","pages":"144-147"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75408712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Recent progress on the pulsed CPT Cs clock at SYRTE","authors":"J. Danet, O. Kozlova, S. Guérandel, E. de Clercq","doi":"10.1109/EFTF.2012.6502341","DOIUrl":"https://doi.org/10.1109/EFTF.2012.6502341","url":null,"abstract":"Recent progress are reported on a compact cesium cell atomic frequency standard based on pulsed Coherent Population Trapping interaction in the Dicke regime. Main short term and long term limiting parameters have been identified. Last improvements have permitted to reach a stability of 7×10<sup>−13</sup> at 1sec and 2×10<sup>−14</sup> at 2000 s. The noise characterization process is presented in this article.","PeriodicalId":6409,"journal":{"name":"2012 European Frequency and Time Forum","volume":"33 1","pages":"91-95"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75509866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Doringshoff, M. Reggentin, E. Kovalchuk, M. Nagel, A. Keetman, T. Schuldt, C. Braxmaier, A. Peters
{"title":"Iodine based optical frequency reference with 10−15 stability","authors":"K. Doringshoff, M. Reggentin, E. Kovalchuk, M. Nagel, A. Keetman, T. Schuldt, C. Braxmaier, A. Peters","doi":"10.1109/EFTF.2012.6502415","DOIUrl":"https://doi.org/10.1109/EFTF.2012.6502415","url":null,"abstract":"We present different setups for frequency stabilization of Nd:YAG lasers to absorption lines in molecular iodine featuring frequency stabilities of 3 · 10−15 at averaging times between 100 s and 1000 s. First results of a semi-monolithic setup, developed aiming at a space qualifiable iodine frequency reference, are shown.","PeriodicalId":6409,"journal":{"name":"2012 European Frequency and Time Forum","volume":"75 1","pages":"419-421"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72682308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Haesler, J. Bennes, T. Overstolz, J. Pierer, R. J. James, D. Ruffieux, S. Lecomte
{"title":"Swiss miniature atomic clock: First prototype and preliminary results","authors":"J. Haesler, J. Bennes, T. Overstolz, J. Pierer, R. J. James, D. Ruffieux, S. Lecomte","doi":"10.1109/EFTF.2012.6502390","DOIUrl":"https://doi.org/10.1109/EFTF.2012.6502390","url":null,"abstract":"The first prototype of an eXtra Small Atomic Resonator (XSAR) was presented by CSEM at the 2009 EFTF conference. This paper describes the progress realized until 2011 towards the realization of a low-power miniature atomic clock. We here present the third generation of the prototype, merging for the first time the physics and electronics packages on a single printed circuit board.","PeriodicalId":6409,"journal":{"name":"2012 European Frequency and Time Forum","volume":"7 1","pages":"312-315"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73469660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
I. Hill, Y. Ovchinnikov, E. Bridge, E. A. Curtis, S. Donnellan, P. Gill
{"title":"A simple, configurable, permanent magnet Zeeman Slower for Sr","authors":"I. Hill, Y. Ovchinnikov, E. Bridge, E. A. Curtis, S. Donnellan, P. Gill","doi":"10.1109/EFTF.2012.6502439","DOIUrl":"https://doi.org/10.1109/EFTF.2012.6502439","url":null,"abstract":"We report the successful demonstration and characterisation of a Zeeman slower based on an array of permanent magnets, implemented for atomic Sr on the <sup>1</sup>S<inf>0</inf> → <sup>1</sup>P<inf>1</inf> transition at 461 nm. Measurements of longitudinal velocity distributions and MOT loading characteristics are presented. In particular, we highlight a simple transverse-field slower, which is both compact and highly tunable, light weight (≤ 2 kg), and with no power load, as a favourable option for space-borne operation. For optimum parameters of this slower we achieve a slow flux of ∼ 3.5 × 10<sup>9</sup> atom/s at ∼ 30 m/s for <sup>88</sup>Sr and load ∼ 2.5 × 10<sup>7</sup> atoms into a magneto-optical-trap (MOT) operating on the same <sup>1</sup>S<inf>0</inf> → <sup>1</sup>P<inf>1</inf> transition, which scales approximately with the relative isotopic natural abundances of Sr. With the addition of repumpers at 707 nm and 679 nm, we achieve a factor of ∼ 17 enhancement to MOT number with loading time ∼ 0.5 s.","PeriodicalId":6409,"journal":{"name":"2012 European Frequency and Time Forum","volume":"53 1","pages":"545-549"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87396432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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