Application of fiber laser used in the field of stent cutting and micromachining

Abstract

Based on the comparison of traditional laser and fiber laser cutting system, a fiber laser based micro-machining system is designed. The main modules of the micro-machining system and the key techniques are analyzed and the corresponding solution is proposed. In particular, the driving, control and modulation system are focused on, in which an SOC system is built up, and the corresponding hardware and software are described in detail. The pulse width and frequency modulation are achieved with software, by setting the related parameters via keyboard. The power, pulse length and pulse frequency can be tunable in our modulation system, which can meet the different laser requirement in various kinds of stents cutting and micro-machining.

Rapid micro hole laser drilling in ceramic substrates using single mode fiber laser

“…1a and b. The obtained reflectivity of 81% is comparable to the reflectivity of 79% reported by Liu et al (2005) at a wavelength of 1064 nm, i.e. the fundamental emission wavelength of a Nd:YAG laser.…”

Fiber Laser Cutting of Alumina Substrates for Electronic Applications Comparison of the Experimentally Determined and Simulated Influence on the Mechanical Strength

“…In detail the optical reflection is determined to 81% at 1,070 nm wavelength, i.e., the emission wavelength of the applied fiber laser. This is comparable to the reflectivity of 79% reported by Liu et al [16]. With respect to the laser cutting process using a near infrared fiber laser, please note that Zhang and Modest [17] published experimental results showing that the absorption of alumina at 1,064 nm significantly increases to more than 90% at temperatures exceeding the melting point of the material.…”

Comparison of dry and wet fibre laser profile cutting of thin 316L stainless steel tubes for medical device applications

“…They have demonstrated that cutting with an Nd:YAG laser slightly degrades the surface quality due to wider striations zone from the top edge of the laser cut. A study by Liu et al (2005) identified that flash-lamp pumped Nd:YAG lasers produced large kerf widths and an expansion of heat affected zones due to low facular quality. On the other hand, the poor stability laser outputs of the Nd:YAG laser caused difficulty in reaching small and consistent kerf width in micro-machining.…”