Journal ArticleDOI
High-efficiency, high-dispersion diffraction gratings based on total internal reflection
Reads0
Chats0
TLDR
A new class of high-dispersion immersed diffraction gratings for which the reflective nature of the diffraction is provided by the phenomenon of total internal reflection regardless of grating tooth shape is reported, suitable for many laser-based technologies.Abstract:
We report a new class of high-dispersion immersed diffraction gratings for which the reflective nature of the diffraction is provided by the phenomenon of total internal reflection (TIR) regardless of grating tooth shape. Thus, the component can be fabricated from a single dielectric material and requires no metallic or dielectric film layers for high reflection diffraction efficiency. With the absence of metallic absorption, diffraction efficiencies of these TIR gratings can reach more than 99% for 15–20-nm spectral bandwidths, making them suitable for many laser-based technologies.read more
Citations
More filters
Journal ArticleDOI
Diffraction gratings: from principles to applications in high-intensity lasers
Nicolas Bonod,Jérôme Néauport +1 more
TL;DR: In this article, the authors review the physics of diffraction gratings and detail the interest in them for pulse compression of high-power laser systems, showing that the unique spectral properties of these gratings revolutionized the field of high energy laser systems.
Journal ArticleDOI
Silicon Nitride Metalenses for Close-to-One Numerical Aperture and Wide-Angle Visible Imaging
Zhi Bin Fan,Zengkai Shao,Ming Yuan Xie,Xiao-Ning Pang,Wen Sheng Ruan,Fu Li Zhao,Yujie Chen,Siyuan Yu,Jian-Wen Dong +8 more
TL;DR: In this article, the authors report the experimental realization of a SiN metalens that is 1 cm across and 695 nm thick, by means of CMOS-compatible fabrication, pointing to the miniaturization of lenses for optical fibers, micro endoscopes, and smart phones, as well as applications in all-sky telescopes, large-angle beam shaping, and near-eye imaging.
Journal ArticleDOI
Silicon nitride metalenses for unpolarized high-NA visible imaging
Zhi-Bin Fan,Zengkai Shao,Mingyuan Xie,Xiao-Ning Pang,Wen-Sheng Ruan,Fuli Zhao,Yujie Chen,Siyuan Yu,Jian-Wen Dong +8 more
TL;DR: In this paper, a divergent metalens based on silicon nitride platform with large numerical aperture (NA~0.98) and high transmission (0.8) for unpolarized visible light, fabricated by a 695-nm-thick hexagonal silicon polysilicon nitride array with a minimum space of 42 nm between adjacent nanoposts.
Journal ArticleDOI
Optical performance and laser induced damage threshold improvement of diffraction gratings used as compressors in ultra high intensity lasers
Nicolas Bonod,Jérôme Néauport +1 more
TL;DR: In this article, gratings engraved in a multilayer dielectric stack for ultra high intensity laser compressors are studied and compared with different groove profiles to increase reflected efficiency and the laser induced damage threshold.
Journal ArticleDOI
High reflection mirrors for pulse compression gratings
TL;DR: An experimental investigation of high reflection mirrors used to fabricate gratings for pulse compression application at the wavelength of 1.053microm evidences that MMLD design can offer damage performances rather similar to MLD design, it also exhibits lower stresses; being thus an optimal mirror substrate for a pulse compression grating operating under vacuum.
References
More filters
Book
Diffraction gratings and applications
Erwin G. Loewen,Evgeny Popov +1 more
TL;DR: A brief history of spectral analysis of gratings can be found in this article, where a review of electromagnetic theories of grating efficiencies is presented, along with an acousto-optic gratings review.
Journal ArticleDOI
General ray-tracing procedure
Gordon Spencer,M. V. R. K. Murty +1 more
TL;DR: In this article, a vector form of the diffraction law is suggested for tracing skew rays through optical systems containing cylindrical and toric surfaces of arbitrary orientation and position, with particular attention given to the treatment of diffraction gratings.
Journal ArticleDOI
Wavelength beam combining of ytterbium fiber lasers.
TL;DR: Wavelength beam combining of five ytterbium fiber lasers is demonstrated in a master-oscillator power-amplifier configuration at combined powers up to 6 W, which is equal to that of an individual fiber.
Journal ArticleDOI
Design of high-efficiency dielectric reflection gratings
Bruce W. Shore,Michael D. Perry,J.A. Britten,R. D. Boyd,Michael D. Feit,Hoang T. Nguyen,Robert Chow,Gary E. Loomis,Lifeng Li +8 more
TL;DR: In this paper, the authors discuss examples of all-dielectric reflection gratings that tolerate high intensity and are potentially capable of placing up to 99% of the incident light into a single diffraction order, such as are needed for contemporary high-power lasers utilizing chirped-pulse amplification.
Journal ArticleDOI
High-efficiency dielectric reflection gratings: design, fabrication, and analysis.
Karl Hehl,Joerg Bischoff,Ullrich Mohaupt,Martin Palme,Bernd Schnabel,Lutz Wenke,R. Bödefeld,W. Theobald,Eberhard Welsch,Roland Sauerbrey,Hartmut Heyer +10 more
TL;DR: Reflection gratings produced entirely of dielectric materials give the opportunity to enhance the laser damage threshold over that occurring in conventional metal gratings used for chirped-pulse-amplification, high-power lasers.