Fiber Laser Basics

A fiber laser (or fibre lase) is a laser in which the active gain medium is an optical fiber doped with rare-earth elements such as erbium, ytterbium, neodymium, dysprosium, praseodymium, thulium and holmium. They are related to doped fiber amplifiers, which provide light amplification without lasing. A fiber laser with MOPA configuration is shown as follows: Pump laser diode: Fiber-coupled diodes

Choosing the Right Galvanometer and Servo for the Job

Galvanometer-based optical scanners are the preferred positioning solution for an increasingly broad range of industrial, scientific, imaging, and medical laser applications. While a number of scanning approaches are available, galvanometer-based scanners commonly called galvos offer flexibility, speed and accuracy at an attractive cost. While many imaging applications take advantage of the galvos

Optimizing Laser Glass Cutting with Diffractive Beam Shaping

Laser glass cutting with ultra-short IR pulses is lately growing to become a key technique for the high throughput glass processing. Cutting thick glasses (500um) using this technique possess unique challenges, as the laser energy needs to be both foc

Spectral Fiber Sensors for Cancer Diagnostics

Cancer is one of the main causes of morbidity and mortality across the globe. Hence, attempts are focused on the early-stage detection of cancer, and optical spectroscopy has been largely used for early diagnosis of cancer. Fluorescence or molecular

Applications of Ultrafast Lasers & OPOs

Applications: Lasers for life sciences There is a need to conduct advanced laser imaging as part of the private and publically funded research into diseases such as cancer, Alzheimers and Parkinsons which are prevalent due to the aging population

Electro-optic Effect

An electro-optic effect is a change in the optical properties of a material in response to an electric field that varies slowly compared with the frequency of light. The term encompasses a number of distinct phenomena

Laser Engraving

Laser engraving, which is a subset of laser marking is the practice of using lasers to engrave an object. Laser marking, on the other hand, is a broader category of methods to leave marks on an object, which also includes color change due to chemical/

How to Select An Electro-optic Q-switch (Pockels Cell)

1. How to Select an EO Q-switch to Meet Your Switching Frequency Requirement The simple answer is that the IMPACT Pockels cells are recommended for operation at a maximum of 1-2kHz. This is not to say they will completely fail to operate at 5kHz. The

Laser-induced Damage in Fibers

Micropositioning, of the input beam must be started from low level of laser beam energy and be carried out very carefully. Sometimes the damage occurs in the place of a hidden defect (alien particle, excessive bending, or some other defect of structur

Basics of Beam Expander

The laser beam enter a beam expander after the laser beam is generated in the laser resonator. The most common type of beam expander is derived from the Galilean telescope which usually has one negative input lens and one positive output lens. The inp

First Pulsing Control of AO Q-switch Drivers

When Q-Switching lasers at high repetition rates, it is normal to observe a giant first pulse after a pause in operation. For many applications this excess energy must be dissipated before or during the next modulation cycle. For example, in lasermarkers, when the time taken for the scan

Basics of F-theta Lenses

General information Lenses used in combination with XY galvanometer scanners are called -theta lenses, plane field objectives or simply scan lenses. -theta lenses are used in various applications from industrial material processing, drilling, welding

Principle of Acousto-Optical Q-switch

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 surface of the

[Application] High Power 780nm for laser cooling and manipulation of Rb atoms

The manipulation of Rb atoms is commonly performed using diode-based laser systems typically producing several hundred mW of usable 780nm power. Many atom optics applications however favour higher laser power whilst maintaining a narrow linewidth and

[Application] Medical Device Manufacturing with FCPA

Lasers are often integral to the production of components for a range of application areas, including medical device manufacturing. These parts are then integrated in numerous products that vary from complex surgical instrumentation to simple single-use products that are used at the time of need by caregivers in hospital settings or out in communities. Designers and manufacturers of medical device

[Application] DOEs for Beam Shaping

A diffractive optical element (DOE) uses thin micro-structure patterns to alter the phase of the light that is propagated through it. Those micro-structures, once properly designed, can manipulate the light to almost any desired intensity profile or s

[Application] Ultrafast Laser on Metal and Glass Welding

Breakthrough process welds metal and glass together using ultrafast lasers Traditionally, welding has been limited to materials that share similar properties, so its tough to make even aluminum and steel join forces. But now, scientists from Heriot-Wa

Laser Mold Cleaning

The new Vulcan laser cleaning systems delivers up to 5x the processing speed of conventional tire mold cleaning systems with an unprecedented 500 – 1600 Watts of cleaning power, with its industry leading laser pulse energy, the Vulcan is the new definition of portability and convenience for tire mold cleaning and preparation.

Ultrafast Laser in Life Science

Empowering biological scientists to see deeper and at higher resolution and frame rates. Biologists, neurobiologists and physicists are using bioimaging techniques to better understand the biological structures and processes of the brain. Over the pas

Optical Measurement of Narrow Holes

By: Roei Yiftah, Moshe Danziger and Shmulik Barzilay General Measuring deep and narrow holes with an aspect ratio of 1:5 (Diameter : Height) has always been a difficult and largely an unsolved problem. This is even more problematic if not only the bot

Scanning Probe Microscope for nanotechnologies

Hollow-core Crystal Fiber in Medical and Research section

Through its unique solutions for laser beam delivery and laser frequency conversion, our technology can address most of the bio-photonic applications such as cytometry, imaging, DNA sequencing or forensics.

Laser De-Painting

/static/upload/image/1634608944963946.jpg

Autofocus for Laser Marking, Welding, Drilling and Cutting Systems Using Non-Contact Distance Sensor

Conventional laser marking, welding, drilling and cuttingsystems often struggle with focusing the laser precisely onthe objects surface. Optimet sensors offer a unique solutionfor autofocusing laser systems. Integrating Optimets noncontactdistance mea