Počet záznamů: 1
Application of digital signal processing in locking of CW lasers on optical frequency combs
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SYSNO ASEP 0426202 Druh ASEP A - Abstrakt Zařazení RIV Záznam nebyl označen do RIV Zařazení RIV Není vybrán druh dokumentu Název Application of digital signal processing in locking of CW lasers on optical frequency combs Tvůrce(i) Čížek, Martin (UPT-D) RID, ORCID, SAI
Číp, Ondřej (UPT-D) RID, SAI, ORCID
Šmíd, Radek (UPT-D) RID, SAI
Hrabina, Jan (UPT-D) RID, ORCID, SAI
Mikel, Břetislav (UPT-D) RID, SAI
Lazar, Josef (UPT-D) RID, ORCID, SAICelkový počet autorů 6 Zdroj.dok. 21th annual International Conference on Advanced Laser Technologies ALT´13. Book of Abstracts. - Budva : University of Montenegro, 2013
S. 146Poč.str. 1 s. Forma vydání Online - E Akce ALT´13. Annual International Conference on Advanced Laser Technologies /21./ Datum konání 16.09.2013-20.09.2013 Místo konání Budva Země ME - Černá Hora Typ akce WRD Jazyk dok. eng - angličtina Země vyd. ME - Černá Hora Klíč. slova digital signal processing ; CW lasers ; optical frequency combs Vědní obor RIV BH - Optika, masery a lasery CEP GPP102/11/P819 GA ČR - Grantová agentura ČR GAP102/10/1813 GA ČR - Grantová agentura ČR TA01010995 GA TA ČR - Technologická agentura ČR ED0017/01/01 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy EE2.4.31.0016 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UPT-D - RVO:68081731 Anotace In cases when it is needed to lock the optical frequency of a CW laser such as a DFB diode laser to a precise metrological reference a possible way is to utilize a setup where an optical frequency comb is used for transferring the stability of a radio frequency (RF) normal (GPS-disciplined oscillator, H-maser, etc.) to the optical domain. Such system takes the signal generated by the RF standard (usually 10 MHz or 100 MHz) as a reference and stabilizes the repetition (frep) and offset (fceo) frequencies of the comb contained in the RF output of the f-2f interferometer. In the next level, the frequency of a beat note (fbeat) between the tunable DFB diode laser and a selected component of the comb spectrum is locked to the same RF standard. As a result, we get a diode laser with optical frequency derived directly from a stable RF reference. These control loops are usually built around analog electronic circuits processing the output signals from fast photodetectors. The presented work describes a different approach based on digital signal processing and software-defined radio algorithms used for processing the f-2f and beat-note signals. The measurements of frep, fceo and fbeat were analyzed by means of calculating Allan deviations for times ranging up to 10 000 s. The digital system is able to stabilize the 100 MHz repetition frequency with absolute deviations observed in mHz. The offset frequency stabilized at 10.7 MHz center exhibits fluctuations in kHz order. In case of fbeat stabilized at 5 MHz offset from a comb spectrum component, the observed fluctuations were in 0.1 kHz order of magnitude. Observed stabilities in the RF domain result in the overall performance of the complete system in the optical domain where it is able to stabilize a diode laser with optical frequency stability in the 10–11 order. Pracoviště Ústav přístrojové techniky Kontakt Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Rok sběru 2015
Počet záznamů: 1