On femtosecond micromachining of HPHT single-crystal diamond with direct laser writing using tight focusing

Zalloum, O. H. Y.; Parrish, Matthew; Terekhov, Alexander; Hofmeister, William

doi:10.1364/oe.18.013122

Cited by 34 publications

(28 citation statements)

References 38 publications

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“…Actually, in the bulk the whole pulse energy is deposited onto the sample compared to only a small energy fraction in the case of nanodiamonds, which have an absorption cross-section smaller than the focused beam area. Therefore, optical breakdown can take place in the diamond plate after the multi-photon absorption and the electron-hole pair formation [26]. This breakdown effect consists of an avalanche ionization in which the seed electrons are driven by the laser field and then cause secondary collisional ionization [27].…”

Section: Quenching Nanodiamond Photoluminescence With 1064 Nm Pulsed mentioning

confidence: 99%

Quenching nitrogen–vacancy center photoluminescence with an infrared pulsed laser

et al. 2013

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Diamond nanocrystals containing nitrogen-vacancy (NV) color centers have been used in recent years as fluorescent probes for near-field and cellular imaging. In this work, we report that an infrared (IR) pulsed excitation beam can quench the photoluminescence of a NV color center in a diamond nanocrystal (size <50 nm) with an extinction ratio as high as ≈90%. We attribute this effect to the heating of the nanocrystal consecutive to multiphoton absorption by the diamond matrix. This quenching is reversible: the photoluminescence intensity goes back to its original value when the IR laser beam is turned off, with a typical response time of 100 ps, allowing for fast control of NV color center photoluminescence. We used this effect to achieve the sub-diffraction-limited imaging of fluorescent diamond nanocrystals 4 These authors have contributed equally to this work. on a coverglass. For that, as in the ground state depletion super-resolution technique, we combined the green excitation laser beam with the control IR depleting one after shaping its intensity profile in a doughnut form, so that the emission comes only from the sub-wavelength size central part.

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Section: Quenching Nanodiamond Photoluminescence With 1064 Nm Pulsed mentioning

confidence: 99%

Quenching nitrogen–vacancy center photoluminescence with an infrared pulsed laser

et al. 2013

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“…LIPSS have been already fabricated on diamond and morphologically investigated by other groups [13][14][15][16][17]. To our knowledge, only Kononenko et al [18] reported on optical transmission behaviour as a function of laser fluence for fs-laser-induced microstructures in bulk natural and CVD diamond.…”

Section: Introductionmentioning

confidence: 99%

Optical properties of femtosecond laser-treated diamond

et al. 2014

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A laser-induced periodic surface structure (LIPSS) has been fabricated on polycrystalline diamond by an ultrashort Ti:Sapphire pulsed laser source (k = 800 nm, P = 3 mJ, 100 fs) in a high vacuum chamber (\10 -7 mbar) in order to increase diamond absorption in the visible and infrared wavelength ranges. A horizontally polarized laser beam had been focussed perpendicularly to the diamond surface and diamond target had been moved by an automated X-Y translational stage along the two directions orthogonal to the optical axis. Scanning electron microscopy of samples reveals an LIPSS with a ripple period of about 170 nm, shorter than the laser wavelength. Raman spectra of processed sample do not point out any evident sp 2 content, and diamond peak presents a right shift, indicating a compressive stress. The investigation of optical properties of fs-laser surface textured diamond is reported. Spectral photometry in the range 200/2,000 nm wavelength shows a significant increase of visible and infrared absorption (more than 80 %) compared to untreated specimens (less than 40 %). The analysis of optical characterization data highlights a close relationship between fabricated LIPSS and absorption properties, confirming the optical effectiveness of such a treatment as a light-trapping structure for diamond: these properties, reported for the first time, open the path for new applications of CVD diamond.

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“…With higher intensity, the laser could be too violent that it would damage much more diamond sample and even NV centers. Different from Ref [30,31]. which showed the multiphoton ionization of carbon atoms in the diamond, here it was the air that was multiphoton-ionized to provide the electrons.…”

Section: Illumination Processmentioning

confidence: 87%

Fabrication of nitrogen vacancy color centers by femtosecond pulse laser illumination

Liu¹,

Chen²,

Song³

et al. 2013

Opt. Express

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We report on a novel method to fabricate single, multiple and large-area high-density ensembles of nitrogen vacancy (NV) color centers in synthetic type Ib bulk diamond by femtosecond laser illumination. Electron beams generated in propagation of intense infrared laser pulses in air sputtered on a diamond sample under high temperature aroused by the laser illumination, creating NV color centers. Typical photoluminescence (PL) spectra of NV centers could be observed on the illuminated spots. Photon streams from individual photoluminescent points exhibited anti-bunching effect by the second-order correlation measurement, evidencing single and multiple photon-emitters around the laser illuminated spots.

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On femtosecond micromachining of HPHT single-crystal diamond with direct laser writing using tight focusing

Cited by 34 publications

References 38 publications

Quenching nitrogen–vacancy center photoluminescence with an infrared pulsed laser

Quenching nitrogen–vacancy center photoluminescence with an infrared pulsed laser

Optical properties of femtosecond laser-treated diamond

Fabrication of nitrogen vacancy color centers by femtosecond pulse laser illumination

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