New Materials for Short-Pulse Amplifiers

Druon, Frédéric; Balembois, François; Georges, Patrick

doi:10.1109/jphot.2011.2135845

Cited by 31 publications

(12 citation statements)

References 49 publications

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“…The probe beam was linearly polarized; the probe wavelength was 1.03 µm. For technical reasons, the studied crystal is a 2at.%Yb:CALGO, and has the dimensions of 2(c)×2×10(a) mm 3 . It was placed into the V-shaped laser cavity and longitudinally-pumped from one side by a fiber-coupled laser diode at 980 nm.…”

Section: Thermal Lensingmentioning

confidence: 99%

“…The interest to Yb:CALGO is motivated by its beneficial spectroscopic and thermal properties [2,3], that allowed for realization of high-efficient and high-power bulk [4,5] and thin-disk lasers [6,7], as well as generation and amplification of ultrashort pulses [8][9][10][11][12][13][14] with pulse production as short as 32 fs [10]. However, Yb:CALGO demonstrate very particular thermal properties involving a strong anisotropy of its lattice.…”

Section: Introductionmentioning

confidence: 99%

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Thermo-optic characterization of Yb:CaGdAlO_4 laser crystal

Loiko¹,

Druon²,

Georges³

et al. 2014

Opt. Mater. Express

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Section: Thermal Lensingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermo-optic characterization of Yb:CaGdAlO_4 laser crystal

Loiko¹,

Druon²,

Georges³

et al. 2014

Opt. Mater. Express

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“…For these large-scale installations, cost-efficient solutions are preferred. Efficient diode pumping usually involves ytterbium-doped materials [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. The development of the technology is mainly based on the knowledge of the amplifying material.…”

Section: Introductionmentioning

confidence: 99%

Diode-pumped Yb:CaF $$_2$$ 2 multipass amplifier producing 50 mJ with dynamic analysis for high repetition rate operation

et al. 2014

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The dynamic thermal issues of the Yb:CaF2 crystals within a multi-tens-mJ-energy multipass amplifier operating in the 20-100 Hz repetition rate range and pumped in quasi-cw regime have been studied at different timescales. Thermal response times of the system have been precisely investigated and analyzed, for the first time to our best knowledge in such amplifiers. This study includes a dual timescale analysis: in the long-time-scale (second) with direct thermography mapping and in the millisecond range with thermal lensing in a pump-probe configuration. Very atypical positive lens behavior with fluorites will also be presented and discussed. This complete analysis is used to demonstrate the capability of Yb:CaF2 multipass amplifier systems for operating the amplifier at 20 Hz with 57 mJ and 100 Hz with 32-mJ stable regime. Indeed, high repetition rate multipass amplifier has been realized for the first time with Yb:CaF2 and for this energy. The results have been analyzed precisely to take into account the thermal issues and excellent beam quality, with a M2 of 1.1. The pointing stability of 20 lrad has been measured documenting the reliability of the high repetition rate mJ amplifier.

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“…However, the drawback of Yb based ultrafast oscillators for biomedical imaging is their limited emission bandwidth and therefore the laser tenability [9,10]. The limited tunability could be addressed by a proper choice of a subsequent nonlinear fiber system.…”

Section: Introductionmentioning

confidence: 99%

Two-photon fluorescence imaging with 30 fs laser system tunable around 1 micron

Resan¹,

Aviles-Espinosa

Kurmulis³

et al. 2013

Cleo: 2013

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Abstract:We developed a low-cost, low-noise, tunable, high-peak-power, ultrafast laser system based on a SESAM-modelocked, solid-state Yb tungstate laser plus spectral broadening via a microstructured fiber followed by pulse compression. The spectral selection, tuning, and pulse compression are performed with a simple prism compressor. The output pulses are tunable from 800 to 1250 nm, with the pulse duration down to 25 fs, and average output power up to 150 mW, at 80 MHz pulse repetition rate. We introduce the figure of merit (FOM) for the two-photon and multiphoton imaging (or other nonlinear processes), which is a useful guideline in discussions and for designing the lasers for an improved microscopy signal. Using a 40 MHz pulse repetition rate laser system, with twice lower FOM, we obtained high signal-to-noise ratio two-photon fluorescence images with or without averaging, of mouse intestine section and zebra fish embryo. The obtained images demonstrate that the developed system is capable of nonlinear (TPE, SHG) imaging in a multimodal operation. The system could be potentially used in a variety of other techniques including, THG, CARS and applications such as nanosurgery. 1119-1121 (2000). 9. F. Druon, F. Balembois, and P. Georges, "New materials for short-pulse amplifiers," IEEE Photon. J. 3(2), 268-273 (2011). 10. S. Ricaud, A. Jaffres, K. Wentsch, A. Suganuma, B. Viana, P. Loiseau, B. Weichelt, M. Abdou-Ahmed, A. Voss, T. Graf, D. Rytz, C. Hönninger, E. Mottay, P. Georges, and F. Druon, "Femtosecond Yb:CaGdAlO4 thin-disk oscillator," Opt. Lett. 37(19), 3984-3986 (2012 Matuschek, and J. Aus der Au, "Semiconductor saturable absorber mirrors (SESAMs) for femtosecond to nanosecond pulse generation in solid-state lasers," IEEE ©2014 Optical Society of America

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New Materials for Short-Pulse Amplifiers

Cited by 31 publications

References 49 publications

Thermo-optic characterization of Yb:CaGdAlO_4 laser crystal

Thermo-optic characterization of Yb:CaGdAlO_4 laser crystal

Diode-pumped Yb:CaF $$_2$$ 2 multipass amplifier producing 50 mJ with dynamic analysis for high repetition rate operation

Two-photon fluorescence imaging with 30 fs laser system tunable around 1 micron

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