Coherent beam combining of seven fiber chirped-pulse amplifiers using an interferometric phase measurement

Heilmann, Anke; Dortz, Jérémy Le; Daniault, Louis; Fsaifes, Ihsan; Bellanger, Séverine; Bourderionnet, Jérôme; Larat, Christian; Lallier, Éric; Antier, Marie; Durand, Éric; Simon-Boisson, Christophe; Brignon, A.; Chanteloup, Jean-Christophe

doi:10.1364/oe.26.031542

Cited by 22 publications

(15 citation statements)

References 13 publications

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“…This detection method has been demonstrated to be theoretically scalable up to about 10,000 fibers [3]. First proof of principles of the XCAN project have been published with 19 passive fibers and 7 high power fiber amplifiers [4,5]. In this paper, we report on the CBC of 37 fiber amplifiers in the femtosecond regime in the way towards our goal of 61 channels.…”

Section: Coherent Beam Combining Of 37 Femtosecond Fiber Amplifiersmentioning

confidence: 99%

Coherent beam combining of 61 femtosecond fiber amplifiers

Fsaifes¹,

Daniault²,

Bellanger³

et al. 2020

Opt. Express

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128

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HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Section: Coherent Beam Combining Of 37 Femtosecond Fiber Amplifiersmentioning

confidence: 99%

Coherent beam combining of 61 femtosecond fiber amplifiers

Fsaifes¹,

Daniault²,

Bellanger³

et al. 2020

Opt. Express

Self Cite

128

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“…with the same accuracy. This method does not provide topographic details; however, this is not a problem in the context of intense lasers obtained by recombination of fiber lasers because it is known that the defects to be measured are limited to pistons and tilts [1][2][3], or in specific cophasing issues [4]. Moreover, the technique does not need a local reference at the time of measurement, which leads to decoupling between calibration step and measurement step.…”

Section: Comparison With the Psi Measurements And Discussionmentioning

confidence: 99%

“…Today, there exists a large panel of projects relying on segmented wavefronts tailoring, either in coherent combination of elementary fiber lasers [1][2][3], astronomy [4], or ophthalmology [5].…”

Section: Introductionmentioning

confidence: 99%

“…In those domains, innovative phase analyzers have been developed to provide a solution to measure accurately and / or co-phase the segmented wavefronts [6][7][8][9][10][11]. In a general way, a co-phasing system must be able of measuring accurately the phase delay (piston) difference between each element in a range from tenths to tens units of wavelength λ, with an error at least below λ/20 and often of the order of λ/100 [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

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High-dynamic range segmented mirror metrology by two-wavelength PISTIL interferometry: demonstration and performance

Rouzé¹,

Primot²,

Lanzoni³

et al. 2020

Opt. Express

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The PISTIL interferometry has been recently developed for the wavefront sensing of phase delays (pistons) and tilts of segmented surfaces, used in many domains such as astronomy, high-power lasers or ophthalmology. In this paper, we propose a two-wavelength version of this interferometer developed to bypass the dynamic range limitation of the ambiguous 2π phase wrapping. Principle of the technique is presented, along with experimental results obtained with a demonstration deformable mirror PTT-111 from Iris AO. Above wavelength pistons are measured with a precision and accuracy below λ/100, making the two-wavelength PISTIL interferometry a high-dynamic range technique. To prove these performances, we successfully compare the results in terms of precision and accuracy with those of a reference phase-shifting Interferometer, from a blind experimentation.

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“…The Digital-to-Analog Converter (DAC) addressing the FS currently limits the accuracy at about ± /50. This value does not compete with state of the art SLMs ( /10000) [13] but is more than sufficient regarding CBC requirements [14]. A couple orders of magnitude improvement could nevertheless be achieved by adjusting DAC current voltage accuracy from current ±10 mV down to sub mV precision while taking adequate electromagnetic environment noise isolation.…”

Section: Fig 2 Near Field Interference Pattern Of 61 Beamlets As Opmentioning

confidence: 99%

Orbital angular momentum beams generation from 61 channels coherent beam combining femtosecond digital laser

et al. 2020

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Coherent beam combining of seven fiber chirped-pulse amplifiers using an interferometric phase measurement

Cited by 22 publications

References 13 publications

Coherent beam combining of 61 femtosecond fiber amplifiers

Coherent beam combining of 61 femtosecond fiber amplifiers

High-dynamic range segmented mirror metrology by two-wavelength PISTIL interferometry: demonstration and performance

Orbital angular momentum beams generation from 61 channels coherent beam combining femtosecond digital laser

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