Resumes
Resumes
Grant Biedermann Phones & Addresses
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730 College Ave, Norman, OK 73069 (405) 292-1586
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920 Pampas Dr SE, Albuquerque, NM 87108
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1441 Pioneer Rd, Ponca City, OK 74604 (580) 762-3410
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Huntsville, AL
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Burlingame, CA
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Mountain View, CA
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Palo Alto, CA
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Menlo Park, CA
Publications
Us Patents
Microfabricated Ion Frequency Standard
View pageUS Patent:
7859350, Dec 28, 2010
Filed:
Apr 28, 2009
Appl. No.:
12/431564
Inventors:
Peter Schwindt - Albuquerque NM, US
Grant Biedermann - Albuquerque NM, US
Matthew G. Blain - Albuquerque NM, US
Daniel L. Stick - Albuquerque NM, US
Darwin K. Serkland - Albuquerque NM, US
Grant Biedermann - Albuquerque NM, US
Matthew G. Blain - Albuquerque NM, US
Daniel L. Stick - Albuquerque NM, US
Darwin K. Serkland - Albuquerque NM, US
Assignee:
Sandia Corporation - Albuquerque NM
International Classification:
H03L 7/26
US Classification:
331 941, 331 3
Abstract:
A microfabricated ion frequency standard (i. e. an ion clock) is disclosed with a permanently-sealed vacuum package containing a source of ytterbium (Yb) ions and an octupole ion trap. The source of Yb ions is a micro-hotplate which generates Yb atoms which are then ionized by a ultraviolet light-emitting diode or a field-emission electron source. The octupole ion trap, which confines the Yb ions, is formed from suspended electrodes on a number of stacked-up substrates. A microwave source excites a ground-state transition frequency of the Yb ions, with a frequency-doubled vertical-external-cavity laser (VECSEL) then exciting the Yb ions up to an excited state to produce fluorescent light which is used to tune the microwave source to the ground-state transition frequency, with the microwave source providing a precise frequency output for the ion clock.