Fibre Laser Cutting and Chemical Etching of AZ31 for Manufacturing Biodegradable Stents

Table 1

General specifications of the laser micromachining system used in the laser microcutting of AZ31 tubes.

IPG Photonics YLP-1/100/50/50 pulsed fibre laser
Wavelength	1064 nm
Maximum average power	50 W
Maximum pulse energy	1 mJ
Minimum pulse duration (FWHM)	100 ns
Pulse repetition rate	20–80 kHz
Collimated beam diameter	5.9 mm
Beam quality factor (M^2)	1.7
Focused beam diameter	23 𝜇m
High precision positioning system
Spindle accuracy	±72.7 𝜇rad
Linear axis accuracy	1 𝜇m