Tunable laser with linewidth suppression for optical frequency standards working in telecommunication bands| Session Chairs: | Juraj Poliak, Josef Lazar |
Dimensional metrology which is now domain of laser optics represents nowadays the most dynamic branch of measurement science. Primary etalons of lengths – highly stable lasers are able to operate with relative uncertainties very close to the primary etalon of time which is at present the most precise instrument ever made. A great breakthrough into the optical metrology came with the introduction of femtosecond mode-locked lasers generating a comb of equidistantly spaced discrete optical frequencies. These frequencies are a multiplied product of the fundamental repetition frequency. Thus a bidirectional bridge between the sphere of radiofrequency and optical frequencies became possible and the idea of uniting the definition and standard of time and length came true. Measurement of geometrical quantities relies primarily on optical techniques with a highly coherent laser source. The dominant family of methods is derived form interference phenomena. This means that a highly precise wavelength generated by a laser standard is used as a scale for distance evaluation. Interferometer can be seen as an analog to the rf counter counting elements of time – it counts elements of length, single waves of spatial frequencies. A host of related techniques broaden the scope of optical metrology to other quantities, up from fundamental metrology to industrial measurements.
9:40 AD02.1 Tunable laser with linewidth suppression for optical frequency standards working in telecommunication bands
R. Smid, M. Cizek, B. Mikel, J. Lazar, O. Cip
Coherence Optics, Institute of Scientific Instruments of Academy of Sciencies of CR, Brno, Czech Republic
10:00 AD02.2 REMOTELY MANAGEABLE PHASE-LOCKED LOOP CONTROLLER FOR STABILIZING OPTICAL FREQUENCY COMBS
V. Hucl, M. Cizek, R. Smid, J. Lazar, O. Cip
Department of Coherence Optics, Institute of Scientific Instruments of the ASCR, v. v. i., Brno, Czech Republic
10:20 AD02.3 LONG-TERM STABLE REMOTE LASER SYNCHRONIZATION OVER A 3.5-KM FIBER LINK WITH ONE-FEMTOSECOND RESIDUAL TIMING JITTER
M. Xin1, K. Safak1,2, M. Y. Peng3, P. T. Callahan3, F. X. Kärtner1,2,3
1Center for Free-Electron Laser Science, Deutsche Elektronen-Synchrotron, Hamburg, Germany
2Physics Department, University of Hamburg and the Hamburg Center for Ultrafast Imaging, Hamburg, Germany
3Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
10:40 AD02.4 LIDT TESTING OF OPTICAL COMPONENTS FOR METROLOGY AND OTHER APPLICATIONS
J. Oulehla, J. Lazar
Institute of Scientific Instruments, AS CR, Brno, Czech Republic