6814 Suchergebnisse für: „“
Geometrical on-axis access to high-finesse resonators by quasi-imaging: a theoretical description
We describe a novel method for providing geometrical on-axis access to an optical enhancement resonator through an on-axis aperture at one of its mirrors. A superposition of transverse modes in a stable...
PublikationenA concept for multiterawatt fibre lasers based on coherent pulse stacking in passive cavities
Since the advent of femtosecond lasers, performance improvements have constantly impacted on existing applications and enabled novel applications. However, one performance feature bearing the potential...
PublikationenMegawatt-scale average-power ultrashort pulses in an enhancement cavity
We investigate power scaling of ultrashort-pulse enhancement cavities. We propose a model for the sensitivity of a cavity design to thermal deformations of the mirrors due to the high circulating powers....
PublikationenStack and dump: Peak-power scaling by coherent pulse addition in passive cavities
During the last decades femtosecond lasers have proven their vast benefit in both scientific and technological tasks. Nevertheless, one laser feature bearing the tremendous potential for high-field applications,...
PublikationenHigh-harmonic generation at 250 MHz with photon energies exceeding 100 eV
Ultrafast spectroscopy in the extreme ultraviolet demands for ever-higher pulse repetition rates and photon energies. Here, we drive cavity-enhanced high-order harmonic generation (HHG) at a repetition...
PublikationenPhase-stable, multi-μJ femtosecond pulses from a repetition-rate tunable Ti:Sa-oscillator-seeded Yb-fiber amplifier
We present a high-power, MHz-repetitionrate, phase-stable femtosecond laser system based on a phase-stabilized Ti:Sa oscillator and a multi-stage Ybfiber chirped-pulse power amplifier. A 10-nm band around...
PublikationenUltrafast optomechanical pulse picking
State-of-the-art optical switches for coupling pulses into and/or out of resonators are based on either the electro-optic or the acousto-optic effect in transmissive elements. In high-power applications,...
PublikationenExtraction of enhanced, ultrashort laser pulses from a passive 10-MHz stack-and-dump cavity
Periodic dumping of ultrashort laser pulses from a passive multi-MHz repetition-rate enhancement cavity is a promising route towards multi-kHz repetition-rate pulses with Joule-level energies at an unparalleled...
PublikationenEnhancement cavities for few-cycle pulses
We address the challenge of increasing the bandwidth of high-finesse femtosecond enhancement cavities and demonstrate a broad spectrum spanning 1800 cm−1 (195 nm) at −10 dB around a central wavelength...
PublikationenTailoring the transverse mode of a highfinesse optical resonator with stepped mirrors
Enhancement cavities (ECs) seeded with femtosecond pulses have developed into the most powerful technique for high-order harmonic generation (HHG) at repetition rates in the tens of MHz. Here, we demonstrate...
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