Anisotropy and polarization dependence of multiphoton charge carrier generation rate in diamond

Kozák, Martin; Otobe, Tomohito; Zukerstein, Martin; Trojánek, F.; Malý, P.

doi:10.1103/physrevb.99.104305

Cited by 21 publications

(17 citation statements)

References 44 publications

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“…An analytical model based on TDSE with a parabolic two-band structure was reported to give consistent results with the experimental data on anisotropy of multiphoton carrier generation in monocrystalline diamond [108]. The energy transfer mechanism from a few cycle intense mid-infrared laser pulse to the electronic system in the bulk of diamond and the subsequent optical breakdown in the material is studied via TDSE with model band structure in [109].…”

Section: Photoionization and Photoexcitationmentioning

confidence: 54%

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Ultrafast Laser Processing of Diamond Materials: A Review

Apostolova

Kurylo²,

Gnilitskyi

2021

Front. Phys.

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Diamond laser engineering is of great importance for designing devices, which find applications in radiation sensing and quantum technologies. A review of the present state of the art of experimental and theoretical studies on ultrashort laser irradiation of diamond is presented. For a wide range of laser parameters, the optimization of laser-induced electronic, optical and structural modifications of diamond requires quantitative understanding of the microscopic processes underlying the high electronic excitation in the material.

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Section: Photoionization and Photoexcitationmentioning

confidence: 54%

“…Ultrafast modification of the band structure of wide-band-gap solids was studied using TDSE in length gauge [110]. In [107][108][109] dipole approximation was used and electronelectron and electron-phonon collisions were neglected.…”

Section: Photoionization and Photoexcitationmentioning

confidence: 99%

Ultrafast Laser Processing of Diamond Materials: A Review

Apostolova

Kurylo²,

Gnilitskyi

2021

Front. Phys.

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“…Since the oscillation in the current accounted for our study arises from polarization decoherence parallel to the polarization direction due to V xc , the large deviation of our results from two-band model is mostly due to the strong nonlinear response of the system to very high-intensity pulse. The strong dielectric modulation of diamond crystal under highintensity laser shows that two-band model is not valid for the description of nonlinear features for the wide bandgap dielectric material though there is recent study that assess the well reproduction of two-band model with experimental results [40]. Figure 5 illustrates the time-averaged Floquet quasiband structure of diamond under the irradiation of threecycle pulses with wavelengths between 300 and 800 nm.…”

Section: Resultsmentioning

confidence: 99%

Transient non-linear optics of diamond under ultrashort excitation pulses

2021

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Electronic response of crystalline diamond as well as high harmonic generation following irradiation by a single-cycle highintensity laser pulse was calculated through modeling the dynamics in the framework of the time-dependent density functional theory. The frequencies of the applied laser pulses vary over visible regime with a timescale shorter than typical quantum dephasing. High harmonic yields, show substantial deviation from what is obtained from the power scaling law of perfect solids under longer cycle pulses due to the key role of strong nonlinear features of dynamics at high intensities. Further, the dynamical photon dressing of electronic states are monitored by Floquet quasi-static picture for ultrashort few cycle pulses. Our results show that dynamical bandgap is diminished as a function of increasing driven field frequency and the system changes into the dynamic metallization regimes that consequently leads to new hybridization of quasi static dressed bands particularly near high symmetrical points in the Brillouin zone. These Floquet hybridization can be used to produce coherent transport of charge on the scale of the huge number of lattice sites. Moreover, the pulse-induced phonon frequency variations that relate to bond softening and hardening, are connected to different order of Floquet dressed states. Importantly, it is found that dielectric response oscillation is directly proportional to the transient bandgap value so that entering into metallization mode preserves the polarization coherency. Based on the magnitude of calculated Keldysh parameter varies for dynamical bandgap, tunneling ionization is the dominant mechanism of excitation.

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“…Low absorption losses within its large transmission window make diamond an attractive platform for on-chip photonics. Specially, intrinsic diamond also suffered multi-photon absorption under extremely high light intensity (Kozák et al, 2012;Kononenko et al, 2014;Wang et al, 2018;Kozak et al, 2019;Zukerstein et al, 2019). In addition, nanocrystalline diamond also shows strong NLO properties for the presence of grain boundaries (Preclíková et al, 2010;Trojánek et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Broadband Nonlinear Optical Response of Nitrogen-Doped Diamond

Xiao

Fang

et al. 2021

Front. Mater.

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A nitrogen-doped diamond crystal with (111) orientation was synthesized with an NaN3 additive in the FeNi-C system at a pressure of 6.5 GPa and a temperature of 1,310°C, using the temperature gradient growth (TGG) method. Spectroscopic properties such as the absorption spectrum and the Raman spectrum as well as the Fourier transform infrared (FTIR) spectrum were studied. FTIR spectroscopy of the C-N vibrational modes at 1,344 and 1,130 cm−1 suggested a nitrogen content of 310 ppm. Its nonlinear optical (NLO) response was investigated using the Z-scan technique under the femtosecond regime. Due to the presence of nitrogen defects, the synthesized crystal performed large nonlinear absorption under both 800- and 532-nm wavelength excitations. However, intrinsic diamond only experiences nonlinear refraction under these two wavelength excitations. Its broadband NLO properties indicated that nitrogen-doped diamond crystals were suitable for the application of ultrafast optical devices.

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Anisotropy and polarization dependence of multiphoton charge carrier generation rate in diamond

Cited by 21 publications

References 44 publications

Ultrafast Laser Processing of Diamond Materials: A Review

Ultrafast Laser Processing of Diamond Materials: A Review

Transient non-linear optics of diamond under ultrashort excitation pulses

Broadband Nonlinear Optical Response of Nitrogen-Doped Diamond

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