Local Crystallization of Lithium-Niobium-Silicate Glass by Copper-Vapor Laser Beam

Shevyakina, D. M.; Lotarev, S. V.; Lipat’ev, A. S.; Priseko, Yu. S.; Lepekhin, N. M.; Сигаев, В. Н.; Kazanskiĭ, P G

doi:10.1007/s10717-015-9754-y

Cited by 2 publications

(4 citation statements)

References 18 publications

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“…It has been demonstrated by Komatsu et al 9,13 , Hirao et al 14 , Miura et al 15 , Honma et al 16 , Qiu et al 2,17 , Jain et al 18 , Sigaev et al 19,20 , and Poumellec et al 21 that it is possible to induce crystallization in glasses with various lasers, such as continuous wave (CW) laser 22 , long laser pulses (e.g. ns laser 19 ), and ultra-short laser pulses (e.g. fs laser 5,23 ).…”

Section: Laser Typesmentioning

confidence: 89%

“…When pulsed lasers are used with a low pulse intensity, the light absorption remains in the linear domain and the requirements for crystallization are the same as for CW lasers: doping is necessary. Sigaev et al 19 reported the formation of LaBGeO 5 in 25La 2 O 3 -25B 2 O 3 -50GeO 2 bulk glass with a copper vapor ns laser (510.6 and 578.2 nm, 10-25 ns, 0.1-1.0 mJ, and 10-18 kHz).…”

Section: Nanosecond Lasersmentioning

confidence: 99%

“…7−10 Generally, after the precipitation of crystalline phases, enhanced properties (e.g., strength and toughness) and/or new functionalities (e.g., second order nonlinear optical properties and linear or circular optical anisotropies) can be obtained in comparison to the parent glasses. 5,10−12 It has been demonstrated by Komatsu et al, 10,13 Hirao et al, 14 Miura et al, 15 Honma et al, 16 Qiu et al, 2,17,18 Jain et al, 19 Sigaev et al, 20,21 and Poumellec et al 22 that it is possible to induce crystallization in glasses with various lasers, such as continuous wave (CW) laser, 23 long laser pulses (e.g., nanosecond (ns) laser), 20 and ultrashort laser pulses (e.g., fs laser). 5,24 In comparison with CW lasers or ns lasers, the light intensity of focused femtosecond (fs) lasers may be as high as several TW/cm 2 .…”

Section: Introductionmentioning

confidence: 97%

“…It has been demonstrated by Komatsu et al, , Hirao et al, Miura et al, Honma et al, Qiu et al, ,, Jain et al, Sigaev et al, , and Poumellec et al that it is possible to induce crystallization in glasses with various lasers, such as continuous wave (CW) laser, long laser pulses (e.g., nanosecond (ns) laser), and ultrashort laser pulses (e.g., fs laser). , In comparison with CW lasers or ns lasers, the light intensity of focused femtosecond (fs) lasers may be as high as several TW/cm 2 . In these conditions, fs lasers can induce multiphoton ionization or/and tunnelling ionization, leading to electron excitation across the band gap of the material. , Then, excitation energy of the electron may be released partially to the lattice and heat it.…”

Section: Introductionmentioning

confidence: 99%

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Femtosecond Laser-Induced Crystallization in Glasses: Growth Dynamics for Orientable Nanostructure and Nanocrystallization

Cao

Lancry

Brisset

et al. 2019

Crystal Growth & Design

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Laser-induced crystallization in glasses is of great interest because of its significant applications in optics. However, the mechanisms involved are not yet concluded and this paper is to make progress on this problem. Major aspects of the laser-induced crystallization are the nanostructure formation, textured crystallization, and growth dynamics. Herein, firstly, we review the previous works on the laser-induced crystallization in various glasses by different kinds of lasers. Then lithium niobium silicate glasses were used as a "glass model" to investigate the nanostructure formation and crystallization by fs laser irradiation at high repetition rate (100-500 kHz). Based on the deposited fs laser power inside glasses, three crystallization regimes can be classified with the increase of laser power. In addition, the boundary between neighboring regimes can be adjusted by changing the writing parameters (e.g. focus depth). Regime 1: modifications of the amorphous structure. Regime 2: phase separation into crystalline LiNbO 3 and amorphous SiO 2 . There is appearance of an organized lamellar nanostructure and textured nanocrystals, embedded in amorphous lamellas. Polar axes are perpendicular to laser polarization direction. Remarkably, this hierarchical micro/nanostructure can induce an orientation tunable second harmonic generation and form birefringence. Regime 3: crystallization morphology is sensitive to the angle between laser writing and laser polarization direction. With parallel configuration, crystal grains are at the micron scale. With perpendicular configuration, crystal morphologies resemble regime 2 but they are not textured. In this paper, a crystallization dynamic model is proposed to explain the nano/micro-crystals formation and their morphology induced by fs laser irradiation. This model allows thinking that it is very likely possible to extend conclusions to other non-congruent glasses. This provides guidelines for manufacturing a wide variety of multifunctional optical devices.

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