Differential electronic gating: A method to measure the shape of short THz pulses with a poorly defined trigger signal

Hovenier, J. N.; van Es, R. W.; Klaassen, T. O.; Wenckebach, W. Th.; Kra¨tschmer, M.; Klappenberger, F.; Schomburg, E.; Winnerl, S.; Knippels, G. M. H.; van der Meer, A. F. G.
September 2000
Applied Physics Letters;9/18/2000, Vol. 77 Issue 12
Academic Journal
A simple experimental method has been developed to determine the shape of repetitive picosecond THz pulses in the presence of a large jitter in the trigger signal. This method, a modification of the recently reported differential optical gating method, is based on the femtosecond electronic gating of a high-frequency sequential oscilloscope. As a test, the shape of THz pulses from the free-electron laser has been measured. © 2000 American Institute of Physics.


Related Articles

  • A digital method for pulse-shape discrimination between neutrons and γ rays at a high counting rate and a low energy of detected radiation. Prokuronov, M.; Shabalin, A. // Instruments & Experimental Techniques;May2007, Vol. 50 Issue 3, p311 

    A digital method for pulse-shape discrimination between neutrons and γ rays was used in measurements at counting rates of up to ∼106 counts/s in the energy range of ∼2–800 keV. Pulses produced by neutrons and γ rays in a stilbene-based scintillation detector were digitized...

  • High-resolution wavelength-agile laser source based on pulsed super-continua. Walewski, J.W.; Sanders, S.T. // Applied Physics B: Lasers & Optics;Sep2004, Vol. 79 Issue 4, p415 

    A high-speed-scanning laser system is presented consisting of three elements in series: an erbium-fiber femtosecond laser emitting at 1.56 μm, a nonlinear fiber, and a dispersive fiber. The system produces chirped broadband pulses that scan from 1.67 to 1.44 μm at a rate of 0.6 nm/ns. The...

  • Measurement of carrier lifetime and interface recombination velocity in Si–Ge waveguides. Trita, A.; Cristiani, I.; Degiorgio, V.; Chrastina, D.; von Känel, H. // Applied Physics Letters;7/23/2007, Vol. 91 Issue 4, p041112 

    The carrier lifetime in Si1-xGex planar waveguides with Si cladding was measured as a function of layer thickness d and Ge concentration x by using an optical pump-and-probe technique. The measured lifetimes are in the range of 20–90 ns. The obtained interface recombination velocity S...

  • Measurements of Femtosecond Pulse Duration by means of Michelson Interferometer without Nonlinear Elements. Levchenko, A.; Batani, D.; Zvorykin, V. // AIP Conference Proceedings;2006, Vol. 827 Issue 1, p182 

    Autocorrelators based on Michelson interferometer using a nonlinear element are commonly used for measuring ultra-short laser pulses. In principle it is possible to use any nonlinear interaction, for example wave mixing (second harmonic generation), photodiodes with two-photon absorption, etc....

  • Magnetic field and temperature dependence of terahertz radiation from InAs surfaces excited by femtosecond laser pulses. Hangyo, M.; Migita, M.; Nakayama, K. // Journal of Applied Physics;10/1/2001, Vol. 90 Issue 7, p3409 

    The magnetic field (0–5 T) and temperature (10–300 K) dependence of terahertz radiation from InAs surfaces excited by femtosecond laser pulses has been studied in detail. The radiation intensity is strongly enhanced under the magnetic field and at low temperatures, which is...

  • Picosecond dynamics of an IR sensitive squaraine dye. Role of singlet and triplet excited states... Di Liu; Kamat, Prashant V.; Thomas, K. George; Thomas, K.J.; Das, Suresh; George, M.V. // Journal of Chemical Physics;4/15/1997, Vol. 106 Issue 15, p6404 

    Examines the photosensitization properties of a novel squaraine dye using picosecond laser flash photolysis. Protonated form of the dye; Association constant as determined from the quenching studies; Singlet excited state of the protonated form of the dye participates in the charge injection...

  • Effect of laser irradiation on carbon implanted copper substrates. Singh, Rajiv K. // Applied Physics Letters;10/21/1991, Vol. 59 Issue 17, p2115 

    Examines the effect of laser irradiation on carbon implanted copper substrates. Comparison between the melting threshold of 15 and 2.5 nanosecond laser pulses; Correlation between maximum melt depth, surface temperature and pulse energy density; Solidification velocities of pulsed lasers.

  • Generation of 415.9-482.6 nm tunable intense picosecond single pulse in LiB[sub 3]O[sub 5]. Fang Huang; Li Huang; Bao-Iu Yin; You-nian Hua // Applied Physics Letters;2/15/1993, Vol. 62 Issue 7, p672 

    Presents an intelligent type II noncritically phase-matched LiB[sub 3]O[sub 5] (LBO) optical generator pumped by 30 picosecond laser pulse. Ways to generate a high power tunable laser; Measurement of the pump-to-signal energy; Use of type II noncritical phase-matching of LBO.

  • Generation of ultrashort pulses from a superluminescent diode with a monolithically integrated.... Lin, C.F.; Tang, C.L. // Applied Physics Letters;11/8/1993, Vol. 63 Issue 19, p2594 

    Examines the generation of short pulses using superluminescent diode with a monolithically integrated absorber in an external cavity coupled to an additional empty cavity. Factors contributing to the reduction of pulse width; Influence of mechanical instability on pulse width; Significance of...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics