Publications and Conferences

 

Summing up Laser world of Photonics China 2025  Expo

 

Holo/Or had a lot of interest from both exisitng and new customers in the latest Laser world of photonics China  exhibition. Our latest VB laser glass cutting objective saw a lot of interest from laser integrators interested in processing transparent materials. Also of interest were our precise  beam shapers for wafer inspection, PV production and other precise laser applications. We feel the PV laser machine  industry is starting to recover from the 2024 slowdown, and stand ready to continue serving it and laser machine integrators in general,  with our cutting edge, high-quality beam shapers.

 

Compact laser Interference patterning setup enabled by Holo/Or DOEs

 

In a recently published letter  , a Swiss and USA team of researchers  have  revealed a new, compact setup for Direct Laser Interference Patterning (DLIP) that uses Holo/Or’s DS-032-Q-Y-A  beamsplitter as  a key component.  DLIP is a method often used for creating dense textures on substrates using high power lasers , and Holo/Or has much experience with such compact setups –  check out our DLIP  Zemax modelling tutorial , or contact us for a quote for DLIP DOEs or a full compact DLIP setup.

 

Improved impulsive stimulated Brillouin scattering microscopy using DOEs

 

Coherent laser beam interference is useful not only in DLIP, but also for Brillouin scattering microscopy. In a recent article, researchers from Tsinghua university used Holo/Or’s DS-278-Q-Y-A  beam splitter  to split the pump beam into two , then interfered these beams, achieving improved gain and spatial resolution in Brillouin scattering microscopy. This technique is useful  in biology for studying the mechanical properties of tissues without label or contact.

 

Products and Applications

 

Upcoming Product: Double sided square lens arrays with improved homogeneity

 

Our BH family of sharp edged, high uniformity diffusers with no zero order is expanding! We have designed a new type of diffuser based on a double-sided square lens array, with a full angle of 5.9X5.9 degrees and excellent intensity uniformity within the shape. These diffusers are suitable for many laser applications- from aesthetic medical skin treatment, through UV laser material processing in the industry display and even multi-KW multimode IR / green fiber laser shaping for welding and surface thermal treatment. Initial experiments are promising, and the product will soon be displayed on our BD page. Feel free to contact us for more details.

 

New beam sampler for UV and ultra short pulse laser process stabilization

 

Holo/or has added a unique  new member to our diffractive beam sampler product  family, SA-230. Designed to sample 2% of the beam at a very low angle (<0.1 deg for 266nm), this sampler enables in-process control by monitoring the beam using a beam profiler set very close to a long optical path. This allows to account for the effects of all optics in the path, unlike sampling at 90 deg using a reflective window. Holo/Or offer a wide variety of beams samplers that can sample beams at large angles (for more compact systems) and at ratios as low as 0.005%. To learn more, check out our sampler application notes .

 

First VB modules delivered to customers

 

Our first batch of  laser glass cutting Variable Depth of Focus Bessel objective have been delivered to the trailblazing customers who will be the first to enjoy the offered cutting  flexibility. All modules are rigorously measured in our setup at multiple DOF settings including the maximum at 1.5mm,  the minimum at 0.08mm and halfway.   The VB module has the same Bessel lobe size of 1.8µm at any DOF setting, as it is based on a unique non-imaging optical concept.  The individual test reports are supplied with each VB module,  giving our customers the confidence that optical the performance is according to the specs. For a quote or more details, please contact us.

 

Technical Tips

 

Using staggered beam splitting design often improves process outcomes