Spatio-temporal dynamics of femtosecond laser pulses at 1550 nm wavelength in crystal silicon

Kadan, Viktor; Pavlova, Svitlana; Pavlov, Ihor; Rezaei, Hossein; Ilday, Omer; Blonskyi, I.

doi:10.1007/s00339-018-1986-6

Cited by 6 publications

(3 citation statements)

References 21 publications

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“…demonstrated third‐harmonic generation in silicon. [ 138 ] The steep electron density profile of the plasma is indeed a nonlinear optical medium suitable for frequency conversion. [ 139 ] This well‐known phenomenon is the basis of high‐harmonic generation [ 140 ] and attosecond science.…”

Section: Self‐limited Excitation With Ultrashort Pulsesmentioning

confidence: 99%

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In‐Volume Laser Direct Writing of Silicon—Challenges and Opportunities

Chambonneau

Grojo

Tokel

et al. 2021

Laser & Photonics Reviews

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Laser direct writing is a widely employed technique for 3D, contactless, and fast functionalization of dielectrics. Its success mainly originates from the utilization of ultrashort laser pulses, offering an incomparable degree of control on the produced material modifications. However, challenges remain for devising an equivalent technique in crystalline silicon which is the backbone material of the semiconductor industry. The physical mechanisms inhibiting sufficient energy deposition inside silicon with femtosecond laser pulses are reviewed in this article as well as the strategies established so far for bypassing these limitations. These solutions consisting of employing longer pulses (in the picosecond and nanosecond regime), femtosecond‐pulse trains, and surface‐seeded bulk modifications have allowed addressing numerous applications.

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Section: Self‐limited Excitation With Ultrashort Pulsesmentioning

confidence: 99%

“…Indeed, the third‐harmonic generated light in ref. [138] is at 516‐nm wavelength, which is strongly absorbed by silicon with a linear absorption coefficient of

8.8 \times 10^{3}

^{- 1}

. [ 142 ] The relatively thin wafers (0.5 mm) used in the experiments made possible the detection of this light.…”

Section: Self‐limited Excitation With Ultrashort Pulsesmentioning

confidence: 99%

In‐Volume Laser Direct Writing of Silicon—Challenges and Opportunities

Chambonneau

Grojo

Tokel

et al. 2021

Laser & Photonics Reviews

View full text Add to dashboard Cite

show abstract

“…This can be attributed to the strong energy depletion lowering rapidly the apparent power as the beam propagate in the material discussed above. Another important remark on the discussion is also that most of the investigations have concentrated on spatial beam transformations but obviously the spectral and temporal characteristics of the pulses are also subject to important transformations in these situations [95,96].…”

Section: Optical Limitations To Energy Localizationmentioning

confidence: 99%

Internal Structuring of Semiconductors with Ultrafast Lasers: Opening a Route to Three-Dimensional Silicon Photonics

Grojo

Chambonneau²,

Lei³

et al. 2023

Springer Series in Optical Sciences

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Important challenges remain to achieve reliable three-dimensional laser writing inside semiconductors as important as silicon. Experiments show that nonlinear energy deposition with long infrared laser pulses can modify silicon internally. However, the level of controllability is extremely limited compared with the femtosecond laser nanostructuring regimes reported in transparent dielectrics. Recent efforts have concentrated on the specificities of the bulk silicon response to tightlyfocused ultrashort pulses. The strong propagation nonlinearities inherent to narrow band-gap semiconductors limit the space-time laser energy localization and prevent in most cases material breakdown with the shortest pulses. This Chapter proposes an overview of this emerging topic and the practical solutions to this problem. It also discusses the potential of three-dimensional laser nanostructuring in narrow band-gap semiconductors to address applications in different fields. Among them, the first demonstrations of refractive index laser engineering in silicon open the perspective to move silicon photonics from two-dimensional systems to monolithic

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Optical, magnetic characterization, and gamma-ray interactions for borate glasses using XCOM program

et al. 2019

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In the present study, the optical characterization of borate glasses with composition 35Li 2 O − 10ZnO − 55B 2 O 3 − xMnO 2 : x = 0, 0.5, 1.0, 1.5, and 2.0 wt% has been investigated. The absorption spectra measurements within the wavelength domain 200-1000 nm have been carried out. The optical energy gap of the investigated samples using the absorption spectrum fitting (ASF) model has been calculated. The molar refraction, molar polarizability, reflection loss, optical transmission for the samples were estimated. The metallization criterion, dielectric constant, refractive index, and energy band metallization criterion for the studied glasses were estimated. Magnetic property measurements for all glass samples were carried out at 300 K. Additionally, the prospects of gamma-ray interactions with the investigated glasses have been achieved through studying the total mass attenuation, coherent, Compton, photoelectric, and pair production interactions at photon energy in the range of 0.356-1.330 MeV. Results reveal that the optical and magnetic properties of the investigated glasses change with changing the MnO 2 concentration. Studied glasses can be used as a candidate for optical fiber and optical devices application. In the other hand, at lower gamma photon energy range, the photoelectric absorption dominates with the glasses, while as the energy increases, the probability of Compton scattering and pair production become the most dominate interactions.

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Spatio-temporal dynamics of femtosecond laser pulses at 1550 nm wavelength in crystal silicon

Cited by 6 publications

References 21 publications

In‐Volume Laser Direct Writing of Silicon—Challenges and Opportunities

In‐Volume Laser Direct Writing of Silicon—Challenges and Opportunities

Internal Structuring of Semiconductors with Ultrafast Lasers: Opening a Route to Three-Dimensional Silicon Photonics

Optical, magnetic characterization, and gamma-ray interactions for borate glasses using XCOM program

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