News Column

At Photonics West SCHOTT introduces coatings with high laser damage threshold

February 6, 2014

ENP Newswire - 06 February 2014

Release date- 04022014 - San Francisco, CA & Mainz, Germany - The international technology group and specialty glass expert SCHOTT is now offering a wide range of coated materials for laser applications.

Thanks to improvements of the coating capabilities at its site in Yverdon-les-Bains, Switzerland, the company is able to offer improved coated active glass devices as well as passive components made from materials such as SCHOTT N-BK7 and FK5 optical glasses, as well as fused silica, filter glass, and ZERODUR glass-ceramic.

Now, a coating is available with a higher laser damage threshold, which is relevant for the development of next-generation laser technology in various fields. SCHOTT is displaying its products at Photonics West (Booth #1601).

'We have been working diligently to make our laser components fit for use in large, demanding projects and a wide range of applications,' says Philippe Younes, Director of Sales for Western Europe for SCHOTT Advanced Optics. New SPIE test results confirm the improved performance of these components.

One of the decisive factors is the laser damage threshold which must be high enough to allow for successful high-power applications that rely on a very high repetition rate of high-energy beams in a very short period of time. SCHOTT's excellent material processing and polishing skills as well as its improved high quality dielectric coating technology make the materials the most resistant against laser induced damage.

Furthermore new optical coating designs allow for broadband high reflection and dispersion control needed for ultrashort pulse, high-power applications. 'While laser glass is produced at the company's US-site in Duryea, Pennsylvania, the post-processing and coating steps are carried out at our facility in Yverdon, Switzerland', said Younes.

Improved material for medical applications

In addition, SCHOTT expanded its portfolio with the 'eye-safe' phosphate laser glass LG940 for use in medical applications such as cosmetic laser treatments in dermatology. To achieve this, the company successfully improved its competency in material processing for short pulse lasers. LG940 laser glass emits at an eye-safe infrared wavelength around 1.54 m.

Since it works in a short pulse regime, it makes new dermatological treatment methods possible that otherwise could not be applied. 'We continuously improve our material and its performance so that we enable our customers to employ the highest technological standards,' explained Younes. 'New applications in ophthalmic optics are now also possible.'

Wide range of passive materials for laser applications

SCHOTT produces a range of components for improving lasing efficiencies and powers. These components such as mirrors, polarizers and beam splitters, are made of passive materials such as fused silica, optical glass (SCHOTT N-BK7, FK5), filter glass or ZERODUR glass-ceramic.

All materials offer extremely high accuracy and cater to demands for the highest quality. Passive laser glass can, for example, be used as laser pumping cavity filters, which absorb undesired pumping light in the UV range, preventing solarization of the laser glass.

SCHOTT is an international technology group with more than 125 years of experience in the areas of specialty glasses and materials and advanced technologies. SCHOTT ranks number one in the world with many of its products.

Its core markets are the household appliance, pharmaceuticals, electronics, optics, solar power, transportation and architecture industries. The company is strongly committed to contributing to its customers' success and making SCHOTT an important part of people's lives with its high-quality products and intelligent solutions.

SCHOTT is committed to managing its business in a sustainable manner and supporting its employees, society and the environment. The SCHOTT Group maintains close proximity to its customers with manufacturing and sales units in 35 different countries. Its workforce of around 16,000 employees generated worldwide sales of approximately 2 billion euros for the 2011/2012 fiscal year. SCHOTT AG, with its headquarters in Mainz, Germany, is owned by the Carl Zeiss Foundation.

SCHOTT delivers laser glass coated with a high laser damage threshold, which is relevant for the development of next-generation laser technology in various fields.


Dr. Haike Frank

PR Manager

Tel: +49 (0)6131/66-4088

Fax: +49 (0)3641/2888-9141

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Source: ENP Newswire

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