Navigation Links
'Comb on a chip' powers new NIST/Caltech atomic clock design
Date:7/22/2014

limeter-wide silica disk that generates the frequency comb for the new clock.

The new microcomb clock uses a laser to excite the Caltech disk to generate a frequency comb, broadens the spectrum using nonlinear fiber, and stabilizes two comb teeth (individual frequencies) to energy transitions in rubidium atoms that "tick" at optical frequencies. (Conventional rubidium atomic clocks operate at much lower microwave frequencies.) The comb converts these optical frequency ticks to the microwave domain.

Thanks to the gear-like properties of the disk and the comb, the output is also 100 times more stable than the intrinsic ticking of the rubidium atoms. According to Diddams. "A simple analogy is that of a mechanical clock: The rubidium atoms provide stable oscillationsa pendulumand the microcomb is like a set of gears that synthesizes optical and microwave frequencies."

The center of the comb spectrum is locked to an infrared laser operating at 1560 nanometers, a wavelength used in telecommunications.

NIST researchers have not yet systematically analyzed the microcomb clock's precision. The prototype uses a tabletop-sized rubidium reference. The scientists expect to reduce the instrument size by switching to a miniature container of atoms like that used in NIST's original chip-scale atomic clock.*** Scientists also hope to find a more stable atomic reference.

The microcomb chip was made by use of conventional semiconductor fabrication techniques and, therefore, could be mass produced and integrated with other chip-scale components such as lasers and atomic references. NIST researchers expect that, with further research, the microcomb clock architecture can achieve substantially better performance in the future.


'/>"/>

Contact: Laura Ost
laura.ost@nist.gov
303-497-4880
National Institute of Standards and Technology (NIST)
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. Hong Kong Department of Health to Combat Sudden Cardiac Arrest With Powerheart AEDs
2. NKTR-102 Demonstrates Synergistic Anti-Tumor Activity in Combination with Pegylated Liposomal Doxorubicin in Platinum-Resistant Ovarian Cancer
3. Metabolex Announces Positive Results From its Clinical Study of Arhalofenate in Combination With Febuxostat
4. Palm Beach Residents to Learn How the Future of Regenerative Medicine Will Combat Aging
5. Baxter Initiates Phase I Clinical Trial of Longer-acting Recombinant FVIII Treatment for Hemophilia A
6. Argos Therapeutic Arcelis™ Immunotherapy AGS-003 in Combination With Sunitinib Shows Statistically Significant Correlation of Immune System Response to Overall Survival in Phase 2 Study in Patients with Advanced Renal Cell Carcinoma (RCC)
7. New nano-material combinations produce leap in infrared technology
8. Jennerex Announces First Patient Treated in Phase 1/2 Clinical Trial of JX-594 in Combination with Irinotecan in Patients with Metastatic Colorectal Cancer
9. Honeycombs of magnets could lead to new type of computer processing
10. Syndax Pharmaceuticals Announces Start of Phase 1/2 Study of Entinostat in Combination with Lapatinib in HER2-Positive Metastatic Breast Cancer
11. Inspiration Biopharmaceuticals Announces Filing of Biologics License Application (BLA) for IB1001, a Recombinant Factor IX Product for People with Hemophilia B
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
'Comb on a chip' powers new NIST/Caltech atomic clock design
(Date:9/15/2014)... State University have developed a technique for controlling the ... voltages, opening the door to a new generation of ... hinges on the fact that the oxide "skin" of ... acts as a surfactant, lowering the surface tension ... researchers used a liquid metal alloy of gallium and ...
(Date:9/15/2014)... Calif. , Sept. 15, 2014 ... new viral transport solution for safe ambient temperature ... to molecular testing. Importantly, the infectivity of agents in ... while maintaining the integrity of the viral nucleic ... of the recent Ebola epidemic in ...
(Date:9/15/2014)... 2014 Die zweite jährliche International ... bis 18. Oktober stattfinden. Die IPAW ist eine ... (PPTA) und ihrer Mitgliedsunternehmen und ... Bewusstsein für die Gewinnung von Quellplasma zu steigern ... und Verbessern von Leben zu würdigen , ...
(Date:9/14/2014)... September 15, 2014 UMBC’s Biotechnology ... on Tuesday, October 21, 2014, from 12:00 to 1:00 ... the program’s innovative curriculum and practice-oriented instruction, designed for ... degree can help advance their career in the biotechnology ... online . , About UMBC’s Biotechnology Graduate Programs, ...
Breaking Biology Technology:Researchers control surface tension to manipulate liquid metals 2Safe storage and transport of Ebola, Mers-CoV, and other viruses: Groundbreaking viral inactivation solution capable of preserving nucleic acids 2Safe storage and transport of Ebola, Mers-CoV, and other viruses: Groundbreaking viral inactivation solution capable of preserving nucleic acids 3International Plasma Awareness Week feiert Spender und rückt seltene Krankheiten in den Mittelpunkt 2International Plasma Awareness Week feiert Spender und rückt seltene Krankheiten in den Mittelpunkt 3UMBC Biotechnology Graduate Programs’ Virtual Info Session, October 21, 2014 2
... Editor's Note: The Wisconsin Technology Network is committed ... development and deployment of technology. We salute the administration ... to help spread the adoption health technology. If ... you should attend the following event. , ...
... available for OS X , ,Eau Claire, Wis. ... of multi-platform Ethernet capabilities, has released Mac OS X ... 10 times the speed of the Apple Xserve G5's ... are network cards targeted at high-performance media and ...
... with stories critical of the ethics of contemporary business ... in the academic literature. A noteworthy exception is "Beyond ... in the Fall 2002 issue of the Sloan Management ... Its an elegantly argued essay that should be required ...
Cached Biology Technology:The doctor is in: Thompson prescribes better health information technology 2The doctor is in: Thompson prescribes better health information technology 3The doctor is in: Thompson prescribes better health information technology 4Small Tree provides Apple drivers for Intel's new 10-gigabit Ethernet cards 2Is your competitive edge really a wedge? 2Is your competitive edge really a wedge? 3
(Date:9/15/2014)... understand how the fish communities might shift under ... of environmental data to inform future decisions relating ... said Paula Whitfield, a research ecologist at NOAA,s ... lead author of the study. , The North ... where historically, both temperate and tropical species live, ...
(Date:9/15/2014)... thrive in the oceans, there must be enough ... areas, extreme oxygen-starvation produces "dead zones" that decimate ... dissolved oxygen levels decline, energy is increasingly diverted ... resulting in impacts on the ecology and biogeochemistry ... years, oxygen minimum zones (OMZs) have expanded due ...
(Date:9/15/2014)... where hippopotamuses are demonstrably shown swimming or floating at ... they can,t swim, how did they reach and colonize ... the methods, patterns, and timing of the colonization and ... may need to be reconsidered. , "Although land bridge ... not currently supported by positive geological evidence, neither ...
Breaking Biology News(10 mins):Study finds warming Atlantic temperatures could increase range of invasive species 2Decoding virus-host interactions in the oxygen-starved ocean 2Decoding virus-host interactions in the oxygen-starved ocean 3Decoding virus-host interactions in the oxygen-starved ocean 4Decoding virus-host interactions in the oxygen-starved ocean 5
... The advance program for AMIA,s 35th Annual Symposium ... educational and scientific event (15 themed tracks of ... industry professionals to share their research findings, innovative ... fueling the expansion of the burgeoning field of ...
... of a skull from the most complete early hominid ... human brain may have evolved more rapidly than previously ... human characteristics. While some features of Australopithecus ... hand, the brain was more ape-like, says Emory University ...
... condition of man is a condition of war, wrote ... books and today,s news headlines certainly seems to support ... selfish and antagonistic. But this view simply doesn,t ... new book "Origins of Altruism and Cooperation" (Springer, 2011), ...
Cached Biology News:Biomedical/health informatics scientists to present cutting-edge science, health IT 2Sediba hominid skull hints at later brain evolution 2Sediba hominid skull hints at later brain evolution 3Humans naturally cooperative, altruistic, social 2
... - NH2 is primarily used for the ... cellular proteins for tracing. NH2-Reactive B-Phycoerythrin, a ... (NHS), and can easily make a covalent ... other proteins without any activation process. Filtration ...
... PrecisION Ion Channel Cell Lines ,High ... ,Ion channels are well known for having ... function and consequently have a key function ... that modulate ion channels have been investigated ...
... PrecisION Ion Channel Cell Lines ,High ... ,Ion channels are well known for having ... function and consequently have a key function ... that modulate ion channels have been investigated ...
... Channel Cell Lines ,High Quality, Functionally-Validated, Ion ... well known for having a critical role ... have a key function in pain, CNS ... channels have been investigated in therapeutic areas, ...
Biology Products: