Drilling of sub-100 μm hourglass-shaped holes in diamond with femtosecond laser pulses
| Autor: | Byunghak Lee, Duchang Heo, Jun Wan Kim, E. G. Sall, J. Yang, Vladimir E. Yashin, Guang-Hoon Kim, J.-A. Choi, Bosu Jeong, J. Jang, J.-H. Kim |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science business.industry Laser source Diamond Drilling Statistical and Nonlinear Physics engineering.material Laser 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention 010309 optics Wavelength Optics law 0103 physical sciences Femtosecond engineering Hourglass Electrical and Electronic Engineering business Laser drilling |
| Zdroj: | Quantum Electronics. 50:201-204 |
| ISSN: | 1468-4799 1063-7818 |
| Popis: | We present images of microholes drilled in diamond using a homemade femtosecond Yb : KGW laser. We use a femtosecond laser source emitting pulses with a duration of 230 fs at a wavelength of 1030 nm, the focusing spot size amounting to 8.9 μm. The effect of the pulse energy and the number of pulses on the microhole geometry (hole diameter, circularity, taper angle, and drilling quality) is evaluated. The obtained results demonstrate the feasibility of drilling of hourglass-shaped holes in a diamond sample, which have similar diameters at the hole entrance (92 μm) and exit (95 μm), but a much smaller diameter (28 μm) at a certain waist section inside the hole. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|