2.856 GHz microwave signal extraction from mode-locked Er-fiber lasers with sub-100 femtosecond timing jitter
Tóm tắt
A balanced optical microwave phase detector (BOMPD) based on a 3 × 3 coupler is presented. This system was developed to extract ultra-low-jitter microwave signals from optical pulse trains emitted by mode-locked Er-fiber lasers, and synchronized microwave and laser systems. We demonstrate that the BOMPD achieves a precision of synchronization of less than 100 femtosecond of timing jitter. The experimental setup can be applied to the soft X-ray free-electron laser located on the campus of the Shanghai synchrotron radiation facility. A microwave signal with a 2.856 GHz frequency is extracted from a 238 MHz mode-locked Er-laser, with an absolute timing jitter of 34 fs in the 10 Hz–10 MHz frequency offset range. In addition, the microwave and 238 MHz optical pulse signals are synchronized with a relative timing jitter of 16 fs at the same frequency offset range.
Tài liệu tham khảo
B.W.J. McNeil, N.R. Thompson, X-ray free-electron lasers. Nat. Photonics 4, 814–821 (2010). https://doi.org/10.1038/nphoton.2010.239
W. Ackermann, G. Asova, V. Ayvazyan et al., Operation of a free-electron laser from the extreme ultraviolet to the water window. Nat. Photonics 1, 336–342 (2007). https://doi.org/10.1038/nphoton.2007.76
T. Shintake, H. Tanaka, T. Hara et al., A compact free-electron laser for generating coherent radiation in the extreme ultraviolet region. Nat. Photonics 2, 555–559 (2008). https://doi.org/10.1038/nphoton.2008.134
P. Emma, R. Akre, J. Arthur et al., First lasing and operation of an ångstrom-wavelength free-electron laser. Nat. Photonics 4, 641–647 (2010). https://doi.org/10.1038/nphoton.2010.176
L. Redecke, K. Nass, D.P. DePonte et al., Natively inhibited Trypanosoma brucei cathepsin B structure determined by using an X-ray laser. Science 339, 227–230 (2012). https://doi.org/10.1126/science.1229663
H.N. Chapman, P. Fromme, A. Barty et al., Femtosecond X-ray protein nanocrystallography. Nature 470, 73–77 (2011). https://doi.org/10.1038/nature09750
S.M. Vinko, O. Ciricosta, B.I. Cho et al., Creation and diagnosis of a solid-density plasma with an X-ray free-electron laser. Nature 482, 59–62 (2012). https://doi.org/10.1038/nature10746
B. Rudek, S. Son, L. Foucar et al., Ultra-efficient ionization of heavy atoms by intense X-ray free-electron laser pulses. Nat. Photonics 6, 858–865 (2012). https://doi.org/10.1038/nphoton.2012.261
A. Rudenko, L. Inhester, K. Hanasaki et al., Femtosecond response of polyatomic molecules to ultra-intense hard X-rays. Nature 546, 129–132 (2017). https://doi.org/10.1038/nature22373
N. Rohringer, D. Ryan, R.A. London et al., Atomic inner-shell X-ray laser at 1.46 nanometers pumped by an X-ray free-electron laser. Nature 481, 488–491 (2012). https://doi.org/10.1038/nature10721
S. Bernitt, G.V. Brown, J.K. Rudolph et al., An unexpectedly low oscillator strength as the origin of the Fe XVII emission problem. Nature 492, 225–228 (2012). https://doi.org/10.1038/nature11627
A. Azima, S. Düsterer, P. Radcliffe et al., Time-resolved pump-probe experiments beyond the jitter limitations at FLASH. Appl. Phys. Lett. 94, 144102 (2009). https://doi.org/10.1063/1.3111789
M.B. Danailov, F. Bencivenga, F. Capotondi et al., Towards jitter-free pump-probe measurements at seeded free electron laser facilities. Opt. Express 22, 12869–12879 (2014). https://doi.org/10.1364/OE.22.012869
J.M. Glownia, J. Cryan, J. Andreasson et al., Time-resolved pump-probe experiments at the LCLS. Opt. Express 18, 17620–17630 (2010). https://doi.org/10.1364/OE.18.017620
J.H. Tan, Q. Gu, W.C. Fang, X-band deflecting cavity design for ultra-short bunch length measurement of SXFEL at SINAP. Nucl. Sci. Tech. 25, 060101 (2014). https://doi.org/10.13538/j.1001-8042/nst.25.060101
E.N. Ivanov, S.A. Diddams, L. Hollberg, Analysis of noise mechanisms limiting the frequency stability of microwave signals generated with a femtosecond laser. IEEE J. Sel. Top. Quantum Electon. 9, 1059–1065 (2003). https://doi.org/10.1109/jstqe.2003.819093
J. Kim, Y. Song, Ultralow-noise mode-locked fiber lasers and frequency combs: principles, status, and applications. Adv. Opt. Photonics 8(3), 465–540 (2016). https://doi.org/10.1364/AOP.8.000465
A. Bartels, S.A. Diddams, T.M. Ramond et al., Modelocked laser pulse trains with sub-femtosecond timing jitter synchronized to an optical reference oscillator. Opt. Lett. 28, 663–665 (2003). https://doi.org/10.1364/OL.28.000663
J. Kim, J. Chen, J. Coxe et al., Attosecond-resolution timing jitter characterization of free-running mode-locked lasers. Opt. Lett. 32(24), 3519–3521 (2007). https://doi.org/10.1364/OL.32.003519
B. Lorbeer, F. Ludwig, H. Schlarb et al., Noise and drift characterization of direct laser to RF conversion scheme for the laser based synchronization system for FLASH at DESY, in PAC. IEEE (2007), p. 9861752. https://doi.org/10.1109/pac.2007.4440152
J. Kim, F.X. Kärtner, F. Ludwig, Balanced optical-microwave phase detectors for optoelectronic phase-locked loops. Opt. Lett. 31, 3659–3661 (2006). https://doi.org/10.1364/OL.31.003659
B. Culshaw, The optical fibre Sagnac interferometer: an overview of its principles and applications. Meas. Sci. Technol. 17, R1–R16 (2006). https://doi.org/10.1088/0957-0233/17/1/R01
J. Kim, F. Ludwig, M. Felber et al., Long-term stable microwave signal extraction from mode-locked lasers. Opt. Lett. 22, 27102–27111 (2014). https://doi.org/10.1364/OE.22.027102
K. Jung, J. Kim, Subfemtosecond synchronization of microwave oscillators with mode-locked Er-fiber lasers. Opt. Lett. 37, 2958–2960 (2012). https://doi.org/10.1364/OL.37.002958
W.Y. Zhang, B. Liu, X.Q. Liu et al., A balanced optical microwave regeneration system[p], Chinese patent: ZL201410455842.6 (2014)
H.X. Deng, Feasibility study on optical vortex generation at Shanghai deep ultraviolet free-electron laser. Nucl. Sci. Tech. 25, 010101 (2014). https://doi.org/10.13538/j.1001-8042/nst.25.010101