Pulsed light effects in amorphous As2S3: review

Tanaka, Keiji; Saitoh, Akira

doi:10.1007/s10854-022-08989-x

Cited by 8 publications

(6 citation statements)

References 171 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The nonlinear coefficients of IKS23 (n2 = 1.45 × 10 −13 cm 2 /W, and β = 7.8 cm/GW) are more than 2-3 times higher than those of the literature data for As2S3 at a wavelength of ~0.8 µm (n2 = 0.65•× 10 −13 cm 2 /W [41], and β = 1-4 cm/GW [42]) despite their similar compositions (see also the review in Ref. [43]). The main explanation for this discrepancy is the expected dependence of the nonlinearity in IKS23 on the probe laser intensity.…”

Section: Experimental Measurementsmentioning

confidence: 63%

Cubic Nonlinearity of Tellurite and Chalcogenide Glasses: Terahertz-Field-Induced Second Harmonic Generation vs. Optical Kerr Effect

Bodrov

Sergeev

Burova³

et al. 2022

Applied Sciences

View full text Add to dashboard Cite

Third-order nonlinear susceptibilities χ(3)(−2ω;ω,ω,0) and χ(3)(−ω;ω,-ω,ω) responsible for electric-field-induced second harmonic generation and the optical Kerr effect were measured and directly compared for tellurite and chalcogenide glasses. The nonlinear coefficients were found by measuring the second harmonic radiation from samples under the action of an external field of terahertz pulses and by the classical z-scan technique, respectively. The influence of ambient air and helium gas on second harmonic generation was analyzed. It was demonstrated that both susceptibilities χ(3)(−2ω;ω,ω,0) and χ(3)(−ω;ω,-ω,ω) have close absolute values, which shows the dominant role of nonresonant electronic nonlinearity in the studied glasses.

show abstract

Section: Experimental Measurementsmentioning

confidence: 63%

Cubic Nonlinearity of Tellurite and Chalcogenide Glasses: Terahertz-Field-Induced Second Harmonic Generation vs. Optical Kerr Effect

Bodrov

Sergeev

Burova³

et al. 2022

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…The maximum photoexpansion obtained by the fs laser is two times higher than the photoexpansion obtained with the cw laser. While Tanaka et al [46] suggest that a high repetition rate laser (such as 80 MHz) can be regarded as quasi-continuum irradiation, it is important to distinguish this from a truly continuous process. With an 80 MHz repetition rate and 15 fs pulse widths, there remains a significant factor of 8 × 10 4 between the temporal periodicity of the laser pulses and the interaction time itself.…”

Section: Resultsmentioning

confidence: 99%

Fs Laser Patterning of Amorphous As2S3 Thin Films

Mihai,

Jipa,

Socol

et al. 2024

Materials

View full text Add to dashboard Cite

This study investigates the morphological changes induced by femtosecond (fs) laser pulses in arsenic trisulfide (As2S3) thin films and gold–arsenic trisulfide (Au\As2S3) heterostructures, grown by pulsed laser deposition (PLD). By means of a direct laser writing experimental setup, the films were systematically irradiated at various laser power and irradiation times to observe their effects on surface modifications. AFM was employed for morphological and topological characterization. Our results reveal a clear transition threshold between photoexpansion and photoevaporation phenomena under different femtosecond laser power regimes, occurring between 1 and 1.5 mW, irrespective of exposure time. Notably, the presence of a gold layer in the heterostructure minimally influenced this threshold. A maximum photoexpansion of 5.2% was obtained in As2S3 films, while the Au\As2S3 heterostructure exhibited a peak photoexpansion of 0.8%. The study also includes a comparative analysis of continuous-wave (cw) laser irradiation, confirming the efficiency of fs laser pulses in inducing photoexpansion effects.

show abstract

“…The concentration of nonequilibrium charge carriers N e achieved in the irradiated film was estimated using the following differential equation:

where α and β are the one- and two-photon absorption coefficients, R is the reflection coefficient, and I ( t ) is the laser radiation intensity, calculated similarly to the method presented in [ 37 ]. The values of the coefficients of one- and two-photon absorption for the As 2 S 3 film were taken equal to α = 1.3 × 10 6 cm −1 [ 38 ] and β = 0.3 cm/GW [ 39 , 40 ], and for the As 2 Se 3 film, α = 2.5 × 10 4 cm −1 [ 38 ] and β = 0.14 cm/GW [ 39 ], respectively.…”

Section: Methodsmentioning

confidence: 99%

Hierarchical Surface Structures and Large-Area Nanoscale Gratings in As2S3 and As2Se3 Films Irradiated with Femtosecond Laser Pulses

et al. 2023

View full text Add to dashboard Cite

Chalcogenide vitreous semiconductors (ChVSs) find application in rewritable optical memory storage and optically switchable infrared photonic devices due to the possibility of fast and reversible phase transitions, as well as high refractive index and transmission in the near- and mid-infrared spectral range. Formed on such materials, laser-induced periodic surface structures (LIPSSs), open wide prospects for increasing information storage capacity and create polarization-sensitive optical elements of infrared photonics. In the present work, a possibility to produce LIPSSs under femtosecond laser irradiation (pulse duration 300 fs, wavelength 515 nm, repetition rate up to 2 kHz, pulse energy ranged 0.03 to 0.5 μJ) is demonstrated on a large (up to 5 × 5 mm2) area of arsenic sulfide (As2S3) and arsenic selenide (As2Se3) ChVS films. Scanning electron and atomic force microscopy revealed that LIPSSs with various periods (170–490 nm) and orientations can coexist within the same irradiated region as a hierarchical structure, resulting from the interference of various plasmon polariton modes generated under intense photoexcitation of nonequilibrium carriers within the film. The depth of the structures varied from 30 to 100 nm. The periods and orientations of the formed LIPSSs were numerically simulated using the Sipe–Drude approach. A good agreement of the calculations with the experimental data was achieved.

show abstract

Pulsed light effects in amorphous As2S3: review

Cited by 8 publications

References 171 publications

Cubic Nonlinearity of Tellurite and Chalcogenide Glasses: Terahertz-Field-Induced Second Harmonic Generation vs. Optical Kerr Effect

Cubic Nonlinearity of Tellurite and Chalcogenide Glasses: Terahertz-Field-Induced Second Harmonic Generation vs. Optical Kerr Effect

Fs Laser Patterning of Amorphous As2S3 Thin Films

Hierarchical Surface Structures and Large-Area Nanoscale Gratings in As2S3 and As2Se3 Films Irradiated with Femtosecond Laser Pulses

Contact Info

Product

Resources

About