The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We describe measurements characterizing the interaction of ultra-high intensity Petawatt laser pulses with solid targets. Experiments were performed on the Petawatt laser at RAL, and the Titan laser at LLNL.
We present the concept and simulation results for ARLpsilas chirped AM ladar operating with a photon counting receiver. The simulation results predict significant improvements in receiver sensitivity.
Results for ARLpsilas breadboard chirped AM ladar using gain modulation of a short wavelength infrared band electron-bombarded active pixel sensor developed for 3D imaging and range-Doppler tracking first reported on last year are updated.
Cross-phase-modulation-induced pulse delay or advancement in an optical fiber is analyzed. It is shown that XPM and group-velocity mismatch can lead to controllable pulse delay or advancement with negligible frequency shift.
We show analytically and numerically that a stationary rescaled pulse (SRP) can exist in a dispersion decreasing fiber with a linearly decreasing dispersion profile. By using the SRP, we demonstrate extremely pedestal-free pulse compression.
A compact multi-loop stretcher system with a pulse confining structure was demonstrated. This system generated chirped pulse with 32 ps/nm chirp rate. The energy loss in the stretcher was compensated by the OPCPA.
We report on the quality of ultrashort pulses that are generated by a chirped pulse fiber amplification system when different pulse shapes are amplified. We focus thereby on sech2, parabolic and experimental parabolic pulse shapes.
We demonstrate an extreme chirped pulse modelocked laser, simultaneously generating near-transform-limited 3.9 ps optical pulses and 510 ps linearly chirped output. The design overcomes fundamental limitations of energy extraction and nonlinearities induced by gain dynamics.
We demonstrate efficient compression of low-power 6 ps pulses down to 420 fs pedestal free pulses at 1.5 mum in an all-fiber scheme employing only 4 meters of As2Se3 fiber and a tailored chirped fiber Bragg grating.
We review high power and high energy ultrafast fiber amplifiers. An Yb-fiber chirped pulse amplification system employing cubicon pulses producing sub-650 fs pulses at >100 muJ and >15W is presented.
Light output from photonic crystal microlaser was remarkably enhanced to 214 times higher by optimizing the laser-waveguide coupled structure. A practical high efficiency was obtained in this type of microlaser, for the first time.
We describe a high repetition rate laser driven X-ray source and the optimization of the X-ray generation at low energy level. This source was used in time resolved X-ray diffraction to study the coherent acoustic phonon.
We demonstrate control of excited state wave packets in LD690 by spectral and phase shaping of the pump pulses. Blue detuned, positively chirped pulses maximize the excited state coherences and slow down the vibrational dephasing.
Self-similar propagation in a system of coupled amplified nonlinear Schrodinger equations is studied. Each individual equation can sustain a component similariton and their incoherent summation leads to an incoherent parabolic similariton under a width-matching condition.
All-fiber chirped-pulse amplification based on a large-mode-area Er:Yb-doped photonic-crystal fiber is presented. A dispersion-variable hybrid fiber stretcher compensates the peculiar dispersion of the hollow-core photonic-bandgap fiber compressor yielding transform-limited 440-fs pulses with 1-W average power.
A Ti:Sa laser using a combination of negatively- and positively-chirped pulse amplification (NPCPA) is demonstrated. The method suppresses spectral narrowing typically appearing in CPA lasers thus supporting bandwidth much broader than a conventional CPA.
We present a theoretical and experimental analysis of two-grating phasing in a broadband pulse mosaic compressor. The phase defaults induced by misaligned gratings and the grating gap effect are studied in a mosaic compressor scheme.
We present a very simple, linear, and general technique for measuring the complete electric field, E(x,y,z,t), of a single ultrashort laser pulse in a single interferogram containing multiple digital holograms simultaneously recorded at different wavelengths.
Using a spatially encoded arrangement for SPIDER, we accurately measure ultra-broadband sub-10-fs pulses that can exhibit a modulated spectrum and space-time coupling. The intuitive interferograms can be acquired single shot and real time.
We report the self-compression of linearly and circularly polarized light pulses down to the few-cycle regime by self-guided beam propagation of intense 38-fs pulses in different gases with uniform density and with a pressure gradient.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.