Total internal reflection-based side-pumping configuration for terawatt ultraviolet amplifier and laser oscillator development

Cadatal-Raduban, Marilou; Pham, Minh Hong; Pham, Duong Van; Bui, Duong Thi Thuy; Yamanoi, Kohei; Takeda, Kohei; Empizo, Melvin John F.; Luong, Mui Viet; Shimizu, Toshihiko; Nguyen, Hung Ngoc; Sarukura, Nobuhiko; Fukuda, Tsuguo

doi:10.1007/s00340-018-6995-9

Cited by 5 publications

(1 citation statement)

References 39 publications

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“…Despite the considerable success of these Ce 3+ -doped fluoride laser materials, their full potential has not yet been fully realized. For example, it has been proposed that terawatt UV pulses can be generated directly using Ce 3+ -doped LiCAF [20], but that is yet to be realized. An ultrashort pulse with high peak intensity propagating in a medium can experience nonlinear optical effects, for example self-focusing, such that the medium acts as a Kerr lens [21].…”

Section: Introductionmentioning

confidence: 99%

Studying the Nonlinear Optical Properties of Fluoride Laser Host Materials in the Ultraviolet Wavelength Region

Pham

Nguyen

et al. 2021

Applied Sciences

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Fluoride host materials doped with trivalent cerium ions have previously been demonstrated as successful laser materials in the ultraviolet wavelength region. However, the nonlinear optical properties of the fluoride hosts in this wavelength region have not been investigated yet, although nonlinearity could result in undesirable effects such as self-focusing and pulse distortion when these fluoride materials are used as gain media in high-power, ultrashort pulse laser oscillator and amplifier systems. In this work, the nonlinear refractive index of lithium calcium aluminum fluoride (LiCaAlF6), lithium strontium aluminum fluoride (LiSrAlF6), lanthanum fluoride (LaF3), and yttrium lithium fluoride (YLiF4) fluoride host materials are determined using the Kramers–Krönig relation model in the ultraviolet wavelength region. Self-focusing conditions, particularly at the peak laser emission wavelength of these materials, are further analyzed. Results show that LiCaAlF6 has the smallest nonlinear refractive index and self-focusing, making it an ideal host material under the conditions of ultrashort pulse and ultrahigh-power laser generation.

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Section: Introductionmentioning

confidence: 99%

Studying the Nonlinear Optical Properties of Fluoride Laser Host Materials in the Ultraviolet Wavelength Region

Pham

Nguyen

et al. 2021

Applied Sciences

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Achromatic Deep Ultraviolet Lens Using Novel Optical Materials

Minami

Cadatal-Raduban

Kuroda

et al. 2020

Physica Status Solidi (b)

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The development of an achromatic lens in the deep ultraviolet (DUV) region is reported. The dispersion and Abbe numbers of lithium calcium aluminum fluoride (LiCaAlF6), magnesium fluoride (MgF2), lithium fluoride (LiF), calcium fluoride (CaF2), and fused silica (SiO2) are investigated in the wavelength range from 200 to 300 nm to determine appropriate material combinations for minimizing chromatic aberration in a doublet. Based on the results of these investigations, a prototype DUV objective lens is fabricated using a LiCaAlF6 (convex lens)SiO2 (concave lens) doublet. The objective lens has a focal length of 10 mm, working distance of 2 mm, and numerical aperture (NA) of 0.2. The objective lens is evaluated to have a chromatic aberration of about 2.8% and resolution of at least 2 μm. It is also evaluated to have a smaller spherical aberration compared with a reflective objective lens with a similar NA.

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Direct band gap tunability of the LiYF4 crystal through high-pressure applications

Luong

Empizo

Gabayno

et al. 2018

Computational Materials Science

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Total internal reflection-based side-pumping configuration for terawatt ultraviolet amplifier and laser oscillator development

Cited by 5 publications

References 39 publications

Studying the Nonlinear Optical Properties of Fluoride Laser Host Materials in the Ultraviolet Wavelength Region

Studying the Nonlinear Optical Properties of Fluoride Laser Host Materials in the Ultraviolet Wavelength Region

Achromatic Deep Ultraviolet Lens Using Novel Optical Materials

Direct band gap tunability of the LiYF4 crystal through high-pressure applications

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