Intrinsic Optical Properties of Diamond

Mildren, Richard P.

doi:10.1002/9783527648603.ch1

Cited by 103 publications

(137 citation statements)

References 80 publications

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“…In this respect, diamond is ideal. It presents a simple symmetrical structure of sp3-bonded carbon atoms while being also a material of enormous interest in science and technology [11][12][13][14][15][16][17] . Furthermore, diamond exhibits an unusual mode of carbon removal from the surface when excited by photons of energy approaching the bandgap.…”

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confidence: 99%

Two-photon polarization-selective etching of emergent nano-structures on diamond surfaces

2014

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Optical techniques have advanced considerably in recent years to enable processing of surfaces with a resolution less than the wavelength of light. Despite the highly selective nature of light-matter interactions, however, efforts to increase resolution to the scale of single atoms are hampered by rapid and efficient dissipation of the absorbed energy to the surrounding matrix. Here we show that two-photon surface excitation using ultraviolet light provides a method for selectively removing carbon from diamond surfaces. Polished surfaces etched by this method develop ultra-deep subwavelength structures with morphologies dependent on the polarization of the incident laser with respect to the crystal axes. As well as revealing a practical and versatile method for nano-patterning of diamond surfaces, we show that the results comprise mesoscopic evidence for bond scission via a highly localized optical interaction that may lead to the development of new optical approaches for ultra-nanoscale (o10 nm) surface structuring.

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confidence: 99%

Two-photon polarization-selective etching of emergent nano-structures on diamond surfaces

2014

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“…The transmission rate of diamond is known to be ~70% and the reflection rate is ~17% [18]. The assumption of a low absorption rate is shown to be applicable as it is roughly 13%.…”

Section: Appl Sci 2017 7 815 8 Of 14mentioning

confidence: 94%

Laser Irradiation Responses of a Single-Crystal Diamond Produced by Different Crystal Growth Methods

Takayama

Yan

2017

Applied Sciences

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Abstract:Responses of two types of single-crystal diamonds, prepared by chemical vapour deposition (CVD) and high pressure high temperature synthesis (HPHT) methods, respectively, to a nanosecond pulsed neodymium-doped yttrium aluminium garnet (Nd:YAG) laser were investigated and compared. It was found that due to the difference in the transmission rate and refractive index, the laser-induced surface/subsurface features of the two types of samples were distinctly different. For the CVD sample, destructive interference takes place on the upper surface, leading to direct ablation of smooth grooves with deposition of graphite. For the HPHT sample, however, laser-induced grooves were formed on the reverse side of the irradiation surface (namely, the lower surface) at certain laser fluences due to the constructive interference phenomenon of the laser and the high refractive index of the material. The reverse-side irradiation resulted in the formation of deep and sharp grooves with rough bottoms and insignificant deposition of graphite on the area surrounding the groove. The machining thresholds for the upper and lower surfaces of both types of diamonds were experimentally obtained and theoretically verified. The findings of this study provide important process criteria for laser machining of different kinds of diamonds. The reverse-side irradiation method enables efficient machining of deep grooves in diamonds using a lower power laser.

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“…CVD diamond possesses favorable optical, thermal and mechanical properties, making it a good candidate for long wave infrared window of airplanes and missiles [1][2][3]. But windows at the front of vehicles are susceptible to erosion from high-velocity airborne particles, run-way debris, et al [4][5][6][7][8], which can cause rapid degradation of the optical properties or, in the worst case, catastrophic failure.…”

Section: Introductionmentioning

confidence: 99%

Erosion difference of growth and nucleation sides of free-standing diamond films prepared by DC arc plasma jet CVD

Zhu

Chen

et al. 2015

Applied Surface Science

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Intrinsic Optical Properties of Diamond

Cited by 103 publications

References 80 publications

Two-photon polarization-selective etching of emergent nano-structures on diamond surfaces

Two-photon polarization-selective etching of emergent nano-structures on diamond surfaces

Laser Irradiation Responses of a Single-Crystal Diamond Produced by Different Crystal Growth Methods

Erosion difference of growth and nucleation sides of free-standing diamond films prepared by DC arc plasma jet CVD

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