Ultrafast dynamics of carriers and nonlinear refractive index in bulk polycrystalline diamond

Zhang, Ben; Liu, Shenye; Wu, Xingzhi; Yi, Tao; Fang, Yu; Zhang, Jian; Zhong, Quanjie; Peng, Xiaoshi; Liu, Xiangming; Song, Yinglin

doi:10.1016/j.ijleo.2016.11.107

Cited by 9 publications

(7 citation statements)

References 28 publications

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“…In most cases, near-infrared luminescence upon the excitation by green laser can be controlled by the irradiation of microwave, which tunes the optical transition paths between the excited and ground states [6]. To extend the optical property of diamond over the current generation of linear optical regime, one requires ultrashort laser pulses, which enables us to induce coherent lattice vibrations [7][8][9][10] as well as nonlinear optical effect, such as the nonlinear refraction and nonlinear absorption [11][12][13]. Almeida et al recently reported on nonlinear optical spectra in high-purity diamond using femtosecond laser pulses with photon energy from 0.83 to 4.77 eV and measured coefficients for the nonlinear refraction and nonlinear absorption [13].…”

Section: Introductionmentioning

confidence: 99%

Giant nonlinear optical effects induced by nitrogen-vacancy centers in diamond crystals

et al. 2019

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We investigate the effect of nitrogen-vacancy (NV) centers in single crystal diamond on nonlinear optical effects using 40 fs femtosecond laser pulses. The near infrared femtosecond pulses allow us to study purely nonlinear optical effects, such as optical Kerr effect (OKE) and two-photon absorption (TPA), relating to unique optical transitions by electronic structures with NV centers. It is found that both the nonlinear optical effects are enhanced by the introduction of NV centers in the N + dose levels of 2.0×10 11 and 1.0×10 12 N + /cm 2 . In particular, our data demonstrate that the OKE signal is strongly enhanced for the heavily implanted type-IIa diamond. We suggest that the strong enhancement of the OKE is possibly originated from cascading OKE, where the high-density NV centers effectively break the inversion symmetry near the surface region of diamond.

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Section: Introductionmentioning

confidence: 99%

Giant nonlinear optical effects induced by nitrogen-vacancy centers in diamond crystals

et al. 2019

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“…The anisotropy of dielectric tensor in excited diamond when going beyond the linear response regime was also demonstarted [131]. Using real-space, real-time TDDFT calculations it was demonstrated that the permittivity tensor of the diamond can be effectively tuned by an ultrashort laser pulse to exhibit hyperbolic or elliptic response for a particular light frequency [132].…”

Section: Optical Propertiesmentioning

confidence: 97%

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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“…The laser processing parameters were chosen as follows: the pulse fluence was F = 11 J/cm 2 and the pulse energy E p ≈ 5 µJ, corresponding to a peak power of P p ≈ 20 MW. The nonlinear refractive index in CVD polycrystalline diamond was n 2 ≈ 1.5 × 10 −15 cm 2 /W [29], while the linear refractive index was n = 2.4, which corresponds to the critical power for self-focusing of P c = 0.15λ 2 nn 2 ≈ 0.45 MW [30], so that the self-focusing in the diamond can assist laser processing.…”

Section: Investigated Laser-induced Periodic Surface Structuresmentioning

confidence: 99%

Investigation of Laser-Induced Periodic Surface Structures Using Synthetic Optical Holography

et al. 2022

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In this paper, the investigation of laser-induced periodic surface structures (LIPSSs) on a polycrystalline diamond substrate using synthetic optical holography (SOH) is demonstrated. While many techniques for LIPSS detection operate with sample contact and/or require preparation or processing of the sample, this novel technique operates entirely non-invasively without any processing of or contact with the LIPSS sample at all. The setup provides holographic amplitude and phase images of the investigated sample with confocally enhanced and diffraction-limited lateral resolution, as well as three-dimensional surface topography images of the periodic structures via phase reconstruction with one single-layer scan only.

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Ultrafast dynamics of carriers and nonlinear refractive index in bulk polycrystalline diamond

Cited by 9 publications

References 28 publications

Giant nonlinear optical effects induced by nitrogen-vacancy centers in diamond crystals

Giant nonlinear optical effects induced by nitrogen-vacancy centers in diamond crystals

Ultrafast Laser Processing of Diamond Materials: A Review

Investigation of Laser-Induced Periodic Surface Structures Using Synthetic Optical Holography

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