New laser crystals for the generation of ultrashort pulses

Druon, Frédéric; Balembois, François; Georges, Patrick

doi:10.1016/j.crhy.2006.04.004

Cited by 90 publications

(62 citation statements)

References 74 publications

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“…For example, picosecond diode-pumped solid-state lasers have successfully been demonstrated up to 160 GHz at 1.06 µm [45] and up to 100 GHz at 1.5 µm [46,47]. The extension of these results to the femtosecond regime looks very promising considering for example the large progress on Yb-doped solid-state laser crystals that support sub-100 fs pulses [26,27,48] and the development of optimized SESAMs for gigahertz operation [49,50]. Furthermore, high average power ultrafast gigahertz lasers may become even more compact and cost-effective with the recent development of SESAM mode-locked optically-pumped semiconductor disk lasers (also referred to as optically-pumped vertical external cavity surface emitting lasers, OP-VECSELs) [51].…”

Section: Discussionmentioning

confidence: 98%

Self-referencable frequency comb from a 170-fs, 1.5-μm solid-state laser oscillator

et al. 2009

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We report measurement of the first carrier-envelope offset (CEO) frequency signal from a spectrally broadened ultrafast solid-state laser oscillator operating in the 1.5 µm spectral region. The f -to-2f CEO frequency beat signal is 49 dB above the noise floor (100-kHz resolution bandwidth) and the free-running linewidth of 3.6 kHz is significantly better than typically obtained by ultrafast fiber laser systems. We used a SESAM mode-locked Er:Yb:glass laser generating 170-fs pulses at a 75 MHz pulse repetition rate with 110-mW average power. It is pumped by one standard telecom-grade 980-nm diode consuming less than 1.5 W of electrical power. Without any further pulse compression and amplification, a coherent octave-spanning frequency comb is generated in a polarization-maintaining highly-nonlinear fiber (PM-HNLF). The fiber length was optimized to yield a strong CEO frequency beat signal between the outer Raman soliton and the spectral peak of the dispersive wave within the supercontinuum. The polarizationmaintaining property of the supercontinuum fiber was crucial; comparable octave-spanning supercontinua from two non-PM fibers showed higher intensity noise and poor coherence. A stable CEO-beat was observed even with pulse durations above 200 fs. Achieving a strong CEO frequency signal from relatively long pulses with moderate power levels substantially relaxes the demands on the driving laser,

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Section: Discussionmentioning

confidence: 98%

Self-referencable frequency comb from a 170-fs, 1.5-μm solid-state laser oscillator

et al. 2009

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“…The gain bandwidth of an actual Yb:YAG laser at a gain peak of 1030 nm is estimated to be 6-9 nm [17,18]. We chose a gain bandwidth of 7.7 nm, which is the middle of the range.…”

Section: Simulation Resultsmentioning

confidence: 99%

Theoretical Analysis of Dependence of Nonlinear Effects in Mode-Locked Yb:YAG Lasers with a Highly Nonlinear Intra-Cavity Medium

et al. 2015

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Nonlinear ultrashort pulse propagation in a mode-locked Yb:YAG laser with a highly nonlinear intra-cavity medium is analyzed using a nonlinear Schrodinger equation. The output spectra are extended by the increased laser intensity, and spectral bandwidths wider than those of the gain medium are achieved. Moreover, pulse widths are shortened by increased laser intensity to considerably less than those of the gain medium. The simulation results qualitatively agree with the experimental results.

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“…The interest in Yb-doped media is justified by their unique spectroscopic properties bringing more advantages for diode pumping than other traditional gain media [3]. They exhibit a broadband absorption cross-section and high fluorescence lifetime at milisecond time scales, low quantum defect and a simple electronic structure that avoids some parasitic effects.…”

Section: Open Accessmentioning

confidence: 99%

Numerical Simulation of High-Energy, Ytterbium-Doped Amplifier Tunability

João¹,

Wemans

Figueira³

2013

Applied Sciences

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Abstract:The study of wavelength tunability for the gain media Yb:CaF 2 and Yb:YAG in a regenerative amplifier configuration, was performed by using a simulation code previously benchmarked with real data. The results demonstrate that both materials have potential for amplifying pulses up to the milijoule level for wavelengths around 1048-1049 nm. In light of this, we propose and evaluate their performance as gain media in the pre-amplifier of a hybrid chain operating at 1053 nm.

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New laser crystals for the generation of ultrashort pulses

Cited by 90 publications

References 74 publications

Self-referencable frequency comb from a 170-fs, 1.5-μm solid-state laser oscillator

Self-referencable frequency comb from a 170-fs, 1.5-μm solid-state laser oscillator

Theoretical Analysis of Dependence of Nonlinear Effects in Mode-Locked Yb:YAG Lasers with a Highly Nonlinear Intra-Cavity Medium

Numerical Simulation of High-Energy, Ytterbium-Doped Amplifier Tunability

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