Multifilament-core fibers for high energy pulse amplification at 15 μm with excellent beam quality

Canat, Guillaume; Jetschke, Sylvia; Unger, Sonja; Lombard, Laurent; Bourdon, P.; Kirchhof, J.; Jolivet, V.; Dolfi, Agnès; Vasseur, Olivier

doi:10.1364/ol.33.002701

Cited by 51 publications

(12 citation statements)

References 10 publications

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“…Indeed, to avoid nonlinear effects (particularly stimulated Brillouin scattering (SBS)), peak power must remain below the SBS threshold. Many methods have been experimented with to overcome this limitation, i.e., special fibers [11] or the use of a temperature or strain gradient along the amplifying fiber [12]. The simplest one from the lidar system point of view is the use of large mode area (LMA) fibers.…”

Section: Fiber Laser Designmentioning

confidence: 99%

Three-Dimensional Wind Measurements with the Fibered Airborne Coherent Doppler Wind Lidar LIVE

et al. 2019

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A three-dimensional (3D) wind profiling Lidar, based on the latest high power 1.5 µm fiber laser development at Onera, has been successfully flown on-board a SAFIRE (Service des Avions Français Instrumentés pour la Recherche en Environnement) ATR42 aircraft. The Lidar called LIVE (LIdar VEnt) is designed to measure wind profiles from the aircraft down to ground level, with a horizontal resolution of 3 km, a vertical resolution of 100 m and a designed accuracy on each three wind vector components better than 0.5 m.s−1. To achieve the required performance, LIVE Lidar emits 410 µJ laser pulses repeating at 14 KHz with a duration of 700 ns and uses a conical scanner of 30° total opening angle and a full scan time of 17 s.

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Section: Fiber Laser Designmentioning

confidence: 99%

Three-Dimensional Wind Measurements with the Fibered Airborne Coherent Doppler Wind Lidar LIVE

et al. 2019

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“…To go beyond this core diameter limit, IPHT and ONERA have built a 40 µm core diameter multifilament-core fibers (MFC) to amplify high peak power pulses [5]. In this technology the fiber core is replaced by microstructured core composed of 37 Erbium-Ytterbium doped filaments surrounded by fluorine doped silica.…”

Section: Increase Of Mode Areamentioning

confidence: 99%

High peak power single-frequency MOPFA for lidar applications

Canat

Augère

Besson

et al. 2016

Conference on Lasers and Electro-Optics

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Long range coherent detection wind lidars have many applications in the fields of wind farms and aircraft safety. Fiber laser sources emitting around 1.5µm show key advantages such as versatility, modularity and robustness of alignments to vibrations. However, nonlinear effects such as Stimulated-Brillouin-Scattering limit achievable peak power because of strong fiber core confinement. Wind lidars based on fiber laser technologies thus operate in a regime with low energy per pulse (typically 10µJ-1mJ) and high pulse repetition frequency (typically 5-50kHz). We investigated various technologies to improve peak power in 1.5µm fiber lasers such as special large mode area (LMA) fiber designs or strain management. Integration of a high peak power source in ONERA LICORNE wind lidar enabled to achieve air speed profiles up to record ranges of 16km within 0.1s averaging time.

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“…Core pumping using a Tm 3+ -doped fiber laser in the 1.8-1.9 lm range is particularly interesting as the optical efficiency when pumping at these wavelengths can reach up to 93% but it results in a more complex system whose total efficiency is lower. The 793 nm multimode diode pumping can result in up to 60% efficiency in CW laser thanks to cross-relaxation [12,28]. The MOPFA layout is shown Fig.…”

Section: High Peak Power Narrow Linewidth Mopfa Emitting At 2050 Nmmentioning

confidence: 99%

“…Gas detection by spectral absorption in MWIR (3-8 lm) and LWIR (8)(9)(10)(11)(12)(13)(14)(15) lm) bands address many applications both in civil and military areas. For example monitoring of air quality, detection of gas leaks in industrial environment or detection of explosive gasses can be addressed by infrared Optical Parametric Oscillators (OPOs).…”

Section: Introductionmentioning

confidence: 99%

Eyesafe high peak power pulsed fiber lasers limited by fiber nonlinearity

Canat

Renard

Lucas³

et al. 2014

Optical Fiber Technology

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a b s t r a c tWe present design and performances of several eye-safe high peak power fiber lasers operating either around 1550 nm or 2000 nm. They share the limitations by nonlinear effects either Stimulated Brillouin Scattering for single frequency lasers or Kerr related effects for short pulse amplifiers. Performances above 1 kW peak power for single frequency lasers and 26 nJ for short pulse fiber lasers are reported. The influence of the saturation power of the fibers on the non-linearity is discussed and applied to a comparison between Erbium and Ytterbium co-doped fibers and Thulium doped fibers. The Brillouin gain properties in these fibers are also compared.

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Multifilament-core fibers for high energy pulse amplification at 15 μm with excellent beam quality

Cited by 51 publications

References 10 publications

Three-Dimensional Wind Measurements with the Fibered Airborne Coherent Doppler Wind Lidar LIVE

Three-Dimensional Wind Measurements with the Fibered Airborne Coherent Doppler Wind Lidar LIVE

High peak power single-frequency MOPFA for lidar applications

Eyesafe high peak power pulsed fiber lasers limited by fiber nonlinearity

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