Heraeus Conamic at SPIE Photonics West 2024

Tailored Fused Silica Solutions for Photonic Challenges

When: January 30th - February 1st

Where: Booth #659 at Moscone Center (San Francisco, California, United States)

Through the decades, Heraeus has earned a reputation of expertise and material performance. With this experience, we can help you achieve the perfect match for your photonic application. Talk to our Heraeus experts on site to discuss your company's needs and the challenges you are facing.

Product Highlights at Photonics West

Fluosil® – High-Performance Fused Silica of Highest Purity

Fluosil stands for highest-purity fused silica for specialty fiber applications with a broad spectral range. From high OH or low OH preforms and rods for passive fibers to tubes for CVD processes for the manufacturing of active and sensing fibers.

Benefits at a glance:

  • Highest transmission from UV to IR
  • High Power Damage Threshold
  • Reliable High Level of Quality


  • Brochure: Specialty Fiber Preforms for Industrial Applications

  • Brochure: Specialty Fiber Preforms for Medical Applications

  • Data Sheet: High Purity Fused Silica Tubes

  • Data Sheet: Highly Fluorine Doped Tubes

  • Data Sheet: Specialty Fiber Preforms

  • Data Sheet: High Purity Fused Silica Rods


Heraeus Conamic Optics - Together we can make it work!

No matter for which application or for which solution - we will find the best suited optical material for your application.

We offer:

  • Excellent scientific & material knowledge
  • Proficiency to tailor materials to your needs
  • The ability to make the best suited geometry


Your benefit:

A tailored product with excellent performance and optimized cost of ownership!

Fused silica in a variety of shapes (plates, ingots, rods, etc.)
  • Brochure: Quartz Glass for Optics - Data and Properties

  • Brochure: Fused Silica for Applications in the Near Infrared


Join our Talk at Photonics West

31 January 2024 • 2:40 PM - 3:00 PM PST | Moscone Center, Room 215 (Level 2 South)

Topic: Characterization of multiclad fibers: approaches to measure the beam divergence angle and its degradation in the fiber

Presenter: Dörte Schönfeld

Dörte Schönfeld studied physics at Friedrich Schiller University Jena, Germany. She graduated on integrated optics and surface analysis in 1996 joining the photonics department of Fraunhofer IOF Jena. Since 1997 she is with Heraeus Quarzglas GmbH & Co. KG. At first, she focused on metrology for microlithography lens blanks, especially interferometry and stress birefringence, for which she was awarded with the first prize of the Heraeus Innovation Award in 2013. In 2015 she changed into the R&D Team Specialty Fiber Optics as project leader of an EU-funded project for the development of a rare earth doped bulk silica for laser fibers. Current studies are concentrated on the development of metrology for fused silica preform and fiber characterization.


Multiclad fibers with un-doped silica core and alternating highly fluorine doped and undoped silica claddings are a new standard for high power laser beam transmission, because they allow tailoring the output beam profile of a single laser source and adjust the laser beam to the application. For these fibers it is important to preserve the divergence angle of the launched light in the different light-guiding sections. In this work, we compare two possible measurement concepts. Results for multiclad fibers are discussed. Finally, it is concluded that a modified far field method with adjusted pinholes is most suited for our objective.