News | January 22, 2018

MKS Announces Ophir® Focal Spot Analyzer For Monitoring Material Processing Laser Performance

MKS Announces Ophir® Focal Spot Analyzer For Monitoring Material Processing Laser Performance

Andover, MA – MKS Instruments, Inc. (NASDAQ: MKSI), a global provider of technologies that enable advanced processes and improve productivity, has announced the Ophir® Focal Spot Analyzer, a laser beam monitoring system that measures the focus spot and power of high power lasers in real time. The Focal Spot Analyzer measures focal spot size down to 35µm and laser power from <1 to 400 watts for wavelengths from 266 – 1100nm. Designed for laser applications with shorter working distances, the system monitors power density distribution of the focal spot and shifts in the focal plane location, and provides a well understood location of the laser caustic. It is so accurate that the distance to the camera array is NIST traceable. This is critical for applications that require a focused spot of light with a well-defined, narrow, and reproducible bandwidth and intensity profile, including medical device manufacturing and microwelding.

"Focusing a laser beam down to a small spot produces higher beam intensities and higher optical efficiencies," stated Gary Wagner, General Manager, Ophir Photonics (U.S.). "This is especially important in such applications as medical device manufacturing where the laser beam is focused to a spot size of a few thousandths of an inch diameter. The Focal Spot Analyzer allows the user to accurately know where they are measuring the laser spot and what the 2D distribution is at the measurement plane, which may or may not be at focus." 

The Focal Spot Analyzer includes a high resolution camera – the SP928 CCD Beam Profiling Camera or the LT665 Large Array Beam Profiling Camera – an LBS-300s beam attenuator system with two beam splitters for polarization-neutral attenuation, BeamGage® beam profiling software, and a calibration certificate. The LBS-300s beam attenuator allows users to control and adjust laser beam output power reaching the camera. Approximately 99% of the beam is transmitted through each beam sampler with 0.01% passed on to the camera. The beam sampler provides an image that is polarization insensitive, which maintains the polarization components of the original beam. 

Availability & Pricing 
The Focal Spot Analyzer is available now. OEM prices available on request.

Focal Spot Analyzer DATA SHEET:

About MKS Instruments
MKS Instruments, Inc. (NASDAQ: MKSI) is a global provider of instruments, subsystems and process control solutions that measure, control, power, monitor, and analyze critical parameters of advanced manufacturing processes to improve process performance and productivity. Our products are derived from our core competencies in pressure measurement and control, flow measurement and control, gas and vapor delivery, gas composition analysis, residual gas analysis, leak detection, control and information technology, ozone generation and delivery, RF & DC power, reactive gas generation, vacuum technology, photonics, sub-micron positioning, vibration isolation and optics. Our primary served markets include semiconductor capital equipment, general industrial, life sciences and research.  Additional information can be found at

About the Ophir Brand
With over 40 years of experience, the Ophir brand comprises a complete line of instrumentation, including power and energy meters and beam profilers. Dedicated to continuous innovation in laser and LED measurement, MKS, through its Ophir brand, holds a number of patents, including the R&D 100 award-winning BeamTrack power/position/size meters; BeamWatch®, the industry’s first non-contact, focus spot size and position monitor for lasers in material processing; and Spiricon Ultracal™, the baseline correction algorithm that helped establish the ISO 11146-3 standard for beam measurement accuracy. The NanoScan family of scanning-slit technology products are capable of measuring beam size and position to sub-micron resolution. The Ophir Optics products include high performance IR thermal lenses and optical elements for the defense, security, and commercial markets, as well as high quality optics for high power CO2 lasers and 1 micron lasers for cutting, welding, drilling, and 3D printing systems. Ophir is ISO/IEC 17025:2005 accredited for calibration of laser measurement instruments. Their modular, customizable solutions serve manufacturing, medical, military, and research industries throughout the world. For more information, visit

Source: Ophir Photonics