The first demonstration of laser action by T. H. Maiman was achieved in 1960 using ruby (Cr3+:Al2O3). In 1960, L. F. Johnson and K. Nassau demonstrated the first solid-state neodymium laser, in which the neodymium ion was a dopant in calcium
When selecting a laser marking system for a particular application there are many factors to consider: power density time reflectivity and thermal. This paper will tell you how to select a laser marking system.
The acousto-optical Q-switch often used in the laser marking makes use of mutual interaction between an ultrasonic wave and a light beam in a scattering medium. The light beam that enters in a direction forming a Bragg angle to the wave surf
Laser micro-drilling technology plays a more and more important role in industry especially in the fabrication of multi-layer electronic packages. In such applications non-metals are often used as insulators in which via holes are form
A laser beam is reflected from two scan mirrors in turn and directed through a focusing lens. The mirrors are capable of high speed deflection about a rotation axis being driven by a galvo-scanner motor.
There are numerous laser marking systems being used to engrave nameplates as a means of applying the advantages of laser marking to products that are too large and / or too heavy to the laser marking systems.
Marking contrast can be achieved by surface material removal or color change. When infrared lasers are used marking contrast relies on thermal effects. When UV lasers such as excimer lasers are used marking contrast can be achieved through a
A simple optical resonator consists of two mirrors. Its most significant character is the open sides which always produce diffraction losses. The functions of a laser resonator are (a) to achieve optical feedback and to generate laser beam;
Light has much relationship with nature matters and living species, since light has a very wide range in its wavelength spectrum (near zero to about 100 mm) and has been underlying in almost every activities of life.
Laser lamps are mercury-free gas discharge lamps used to pump solid-state lasers in many laser applications like welding cutting and marking.They are especially suitable for high-power lasers or lasers with high precision
This paper describes the results of optimising three process variables (control factors) to achieve a narrow line width in laser engraving of ITO conductive coatings using the Taguchi technique of experimental design.
A beam of finite diameter is focused by a lens to obtain a smaller beam spot. If the diameter of the focused spot d0 is defined as the diameter which contains 86% of the focused energy the focus spot size is determined by