High-efficiency, broad band, high-damage threshold high-index gratings for femtosecond pulse compression

Canova, F.; Clady, R.; Chambaret, Jean-Paul; Flury, Manuel; Tonchev, S.; Fechner, Renate; Parriaux, Ο.

doi:10.1364/oe.15.015324

Cited by 90 publications

(53 citation statements)

References 11 publications

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“…This has triggered many research activities in the recent years, covering both design and fabrication. Gratings with highefficiency over 200 nm bandwidth based on metal-dielectric structure have been reported [18][19]. However, the use of metallic materials reduces the efficiency and LIDT of these components.…”

Section: Multilayer Dielectric Gratingsmentioning

confidence: 99%

“…Due to the low absorption, multilayer dielectric gratings (MDG) provide high-efficiency, high laser-induced damage threshold (LIDT) [15][16][17]. To meet the bandwidth requirements in ultrashort laser systems, the research on broadband MDG draws increasing attention [18][19][20][21]. Pulse compression gratings and broadband polarizers can be realized with a single material based on a 2D photonic crystal structure.…”

Section: Introductionmentioning

confidence: 99%

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Innovations in structured thin film design and fabrication for optical applications

Wang

Erdmann

et al. 2010

Seventh International Conference on Thin Film Physics and Applications

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This paper presents the design and fabrication of several versions of structured thin films (STF). One kind of STF is a sculptured thin film, generally deposited with a glancing angle deposition technique. Several optical components were designed and fabricated using this technique. This includes a TiO2 based wave-plate for an operating wavelength of 550 nm, a multilayer based beam splitter with a transmittance of 75.0% for TM light and 38.6% for TE light at 632 nm, and a multilayer based polarization neutral transmission filter for an incidence angle of 45°. Multilayer dielectric gratings (MDG) present another type of STF. To obtain a broad diffraction bandwidth, a novel MDG structure with three materials is proposed. Using multi-parameter optimization, a broadband spectrum with an efficiency >97.5% and a bandwidth >100 nm centered at 800 nm was obtained. For the first time, a new type of two-dimensional (2D) MDG is proposed to obtain higher efficiency (>98%) and broader bandwidth (>110 nm). Finally, the designs of pulse compression gratings and of broadband polarizers, which can be fabricated with a single material, are presented

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Section: Multilayer Dielectric Gratingsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Innovations in structured thin film design and fabrication for optical applications

Wang

Erdmann

et al. 2010

Seventh International Conference on Thin Film Physics and Applications

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“…To yield higher energy output and shorter pulse laser, the higher diffraction efficiency through wider bandwidth of gratings is needed [1] . To obtain higher energy output and meanwhile to avoid induced damage of grating under the high-power laser, the larger scale of the grating is better.…”

Section: Introductionmentioning

confidence: 99%

Design of high-efficiency broad-bandwidth pulse compression device based on composite transmission grating with high damage threshold

Chen

Liu

et al. 2014

SPIE Proceedings

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A novel pulse compression device has been developed for femto-second Ti: sapphire laser at 800nm center wavelength with 700nm~900nm bandwidth. This new kind of composite pulse compression device consists of two fused silica transmission gratings with 1250lp/mm and 3300lp/mm respectively and these two fused silica transmission gratings are located in two optical surfaces of the same fused silica plate. Owing to use anti-reflection transmission gratings with high space frequency (3300lp/mm), it can avoid the wave-front distort derived from coating antireflection film on one surface of the fused silica plate. Being made of fused silica, this new composite pulse compression device will be expected to have high laser damage threshold. The calculation results show that: the -1 st order diffraction efficiency of 1250lp/mm grating is over 87% within the 700nm and 900nm broad-bandwidth for rectangular groove and TE polarization state. And the average diffraction efficiency within the 700nm and 900nm broad-bandwidth is more than 92%. At 800nm, the -1 st transmitted order diffraction efficiency is great to 96% while the transmittance of 3300lp/mm grating is up to 99.9%.

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“…For applications in high power laser systems two requirements for the reflective gratings are high efficiency and high laser-induced damage threshold (LIDT) [4]. Both metallic gratings [5] and multilayer dielectric (MLD) gratings [6] can achieve high efficiency.…”

Section: Introductionmentioning

confidence: 99%

Polarization-independent wideband mixed metal dielectric reflective gratings

Zhou

Cao

et al. 2012

Appl. Opt.

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A polarization-independent wideband mixed metal dielectric grating with high efficiency of the −1st order is analyzed and designed in Littrow mounting. The mixed metal dielectric grating consists of a rectangular-groove transmission dielectric grating on the top layer and a highly reflective mirror composed of a connecting layer and a metal film. Simplified modal analysis is carried out, and it shows that when the phase difference accumulated by the two propagating modes is odd multiples of π ∕ 2, the diffraction efficiency of the −1st order will be high. Selecting grating depth and duty cycle for satisfying the phase difference condition for both TE (electric field parallel to grooves) and TM (magnetic field parallel to grooves) polarizations, a polarization-independent high-efficiency grating can be designed. Using rigorous coupled-wave analysis and a simulated annealing algorithm, geometric parameters of the reflective grating are exactly obtained. The optimized grating for operation around a wavelength of 800 nm exhibits diffraction efficiencies higher than 90% for both TE and TM polarizations over a 120 nm wavelength bandwidth. The simplified modal analysis can be applied in other types of reflective gratings if the top layer is a dielectric transmission grating.

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High-efficiency, broad band, high-damage threshold high-index gratings for femtosecond pulse compression

Cited by 90 publications

References 11 publications

Innovations in structured thin film design and fabrication for optical applications

Innovations in structured thin film design and fabrication for optical applications

Design of high-efficiency broad-bandwidth pulse compression device based on composite transmission grating with high damage threshold

Polarization-independent wideband mixed metal dielectric reflective gratings

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