Crystalline Mirror Solutions GmbH

Crystalline Mirror Solutions GmbH (CMS) is an Austrian deep-technology company that develops and manufactures crystalline optical coatings — most notably single-crystal semiconductor mirrors — for ultra-low-loss laser optics. The company was founded in 2013 as a spin-off from research groups at the University of Vienna and the Austrian Academy of Sciences, commercializing a technology based on semiconductor heterostructures that are epitaxially grown and then transferred onto optical substrates. These crystalline mirrors achieve exceptionally low optical absorption and mechanical loss, making them valuable in precision interferometry, gravitational-wave detection, optical atomic clocks, and cavity quantum electrodynamics. CMS is headquartered in Vienna, Austria, and has served the global scientific instrumentation market, supplying research laboratories and industrial customers with crystalline mirror components and related optical products. Its technology has been associated with applications in high-finesse optical cavities and next-generation laser systems where conventional amorphous dielectric coatings introduce thermal noise and absorption losses. In 2019, the company was acquired by Thorlabs, Inc., a major privately held photonics and optics company based in the United States. Following the acquisition, CMS products have been distributed and marketed through Thorlabs' crystalline mirror product line, integrating the Austrian-developed technology into a broader catalog of photonics tools. The company operates as a subsidiary within the Thorlabs group and continues to be associated with its Vienna research and manufacturing base.

Crystalline Mirror Solutions GmbH was founded in 2013 as a spin-off from academic research in Vienna, Austria. The underlying technology originated from work on semiconductor-based crystalline coatings carried out by researchers affiliated with the University of Vienna and the Austrian Academy of Sciences, including Markus Aspelmeyer and Garrett Cole. The company was established to commercialize single-crystal semiconductor mirrors — sometimes referred to as crystalline coatings — that are grown epitaxially and then transferred onto optical substrates. The core innovation addressed a long-standing limitation in precision optics: conventional amorphous dielectric mirror coatings exhibit mechanical loss and optical absorption that can limit the performance of high-finesse optical cavities, interferometers, and laser systems. Crystalline mirrors based on semiconductor heterostructures offer significantly lower loss, making them attractive for applications such as gravitational-wave detectors, optical atomic clocks, and cavity optomechanics. CMS established its base in Vienna and served the global scientific market, supplying crystalline mirror products to research institutions and industrial customers. The company's technology was recognized in the photonics community for enabling ultra-low-noise optical measurements. In 2019, Crystalline Mirror Solutions was acquired by Thorlabs, Inc., a privately held photonics company headquartered in Newton, New Jersey, United States. The acquisition integrated CMS's crystalline mirror technology into Thorlabs' broad portfolio of optical and photonics products. Following the acquisition, CMS continued to operate as a subsidiary, with its products marketed through Thorlabs' crystalline mirror product line. The Vienna site remained associated with the development and production of crystalline coatings within the Thorlabs group.

• 2019

  Acquired by Thorlabs, Inc., integrating crystalline mirror technology into Thorlabs' photonics portfolio.

• 2013

  Crystalline Mirror Solutions GmbH founded in Vienna, Austria, as a spin-off from University of Vienna and Austrian Academy of Sciences research.

Deep-tech photonics supplier specializing in crystalline optical coatings with ultra-low absorption and mechanical loss for precision laser and quantum optics applications.

• Crystalline semiconductor mirrors

  Single-crystal epitaxially grown mirrors transferred onto optical substrates for ultra-low-loss laser optics.

• Crystalline coatings for high-finesse cavities

  Optical coatings enabling low mechanical loss and low absorption in precision interferometry and quantum optics.

1. 1Crystalline Mirror Solutions GmbH — Wikidatawikidata.org
2. 2Thorlabs Crystalline Mirrorsthorlabs.com