News and events


Femtosecond optics

2015 May 12

The market for femtosecond optics has grown over the decades since the introduction of first sub-picosecond lasers in 1990s but it still remains quite small compared to longer pulse or CW lasers and all the optics available for such lasers. Conventional optics and coatings will inevitably end up by either distorting the temporal characteristics of the pulse, being damaged by high peak power of the pulse, or both.

Optical materials possess a specific quality when the phase velocity of light inside the material dependent on the frequency (or wavelength), or equivalently when the group velocity depends on the frequency. This is called chromatic dispersion or group-velocity dispersion (GVD). The latter is measured in units of s²/m or fs²/mm. It’s most convenient to define GVD for optical materials (glasses, fibers etc) in order to evaluate how much your pulse will stretch or compress by using different thickness/length of material. For optical components an alternative measure called the group delay dispersion (GDD) is used. GDD characterizes dispersion for the optical whole component without the need to take thickness/length into consideration.

GDD is usually an unwanted effect because streched ultrashort pulse will lose it’s two main properties: it will no longer be ultrashort and it’s peak power will distribute withint the streched pulse (please refer to figure 1). Usually, the only case where pulse streching is a sought-after effect is in ultrashort pulse amplifiers which streches the pulse, amplifies it and compresses it again.

Schematic representation of ultrashort pulse spreading after a non-GDD compensated optical component is introduced to the setup

Figure 1. Schematic representation of ultrashort pulse spreading after a non-GDD compensated
optical component is introduced to the setup.

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Altechna has been working with femtosecond optics since the beginning of the company in 1996 and has shown its expertise by helping its customers tame the sub-picosecond pulses. Here are the features of our key ultrafast laser components

For full range of ultrafast laser products please visit


How our business is done

2015 February 18
Every order starts with a discussion. Altechna engineers not only find out more about the needs of the clients, but also advise them and, if necessary, find new solutions in the market. Since physicists make up as much as one third of the company’s staff, professional solutions are ensured.

The Altechna production process is based on experience, a large network of suppliers, and rigorous quality control. Some of the components are manufactured by Altechna and the remaining ones are ordered from reputable suppliers. Depending on the specifics of the order, we select only the very best suppliers who can offer the highest quality products and services at the right price. This not only keeps the cost of production low, but also allows us to flexibly solve customer problems and produce products of only the highest quality.

More complicated products, such as Watt Pilot attenuators, which consist of numerous parts and require more knowledge and experience to produce, are put together in the Altechna production department.

All production with no exceptions is tested in Altechna's quality control laboratory and only then is delivered to the customer.

A considerable number of successfully implemented complicated non-standard orders speak of our expertise.

You can choose from more than 30,000 products in our catalog. We can also provide you with any customized product based on your requirements. Altechna professionals are custom order experts, effectively delivering the best optical components and solutions; thus, saving your time and efforts for better business development.

„Femto Solutions“ - up to date choice for femto products

2014 October 1
Altechna presents brand new design for – e-shop dedicated only to Ultrashort pulse related products. Best solutions for the most demanding femtosecond systems from single source:
  • fs general and polarization optics
  • fs laser and nonlinear crystals
  • fs accessories
All products are of the highest quality. This is proved by inspecting at Altechna metrology laboratory which fits ISO 9001:2008 quality standards. Moreover all stock items are listed live and available in real time.
From now on Femto Solutions offers more convenient shopping policy:
  • Order online or via email 24/7.
  • Profesional technical support by qualified sales staff.
  • Secured payment with Paypal, Mastercard and Visa.
  • All products have defect free warranty.
Updated webpage allows you to order products not only at your office desk but also has became more convenient to shop online via tablets or smart phones.
For more information please contact [email protected]

Group delay dispersion measurements

2014 August 27
We are glad to announce that Altechna Metrology laboratory has started providing group delay dispersion (GDD) measurements in optical components in the range from 500 nm to 1650 nm. For such measurements we use KMLabs instrument Chromatis that quickly and accurately characterizes the full dispersive properties of optical components and coatings. Carefully managing optical dispersion is critical for optimal performance of ultrafast laser systems, multi-layer mirrors, and multiple quantum well structures.
Four measurement modes are available:
1. 0° Angle of Incidence (AOI) in Reflection
2. 5° - 70° AOI in Reflection
3. 0° -70° AOI in Transmission
4. Mirror pair measurement with variable AOI (6° -54°)
Measurement report includes Group Delay and Group Delay Dispersion curves for s and p polarizations, user also could select to show third and fourth order dispersion curves on the graph.
For more details about Altechna metrology services please visit


Altechna products at FindLight

2014 August 18
Altechna has recently joined FindLight – a search engine and a catalog of photonics products. Its industry specific technical filters allow specialists search find and learn about the products they need within seconds.

At platform you may find Altechna‘s laser related components and solutions for laser manufacturers, industrial clients and R&D labratories.

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Tradeshows and events

Laser World of Photonics

22-25 June
Munich, Germany
For your particular needs in laser optics or custom solutions, please meet our experts at Laser World of Photonics and explore our featured products:
  • Laser and nonlinear crystals: Ti:Sapphire, Yb:KGW, Yb:KYW
  • Ultrafast optics: low GDD, ultrafast and GTI mirrors
  • Laser accessories: motorized attenuators Watt Pilot and PowerXP, variable beam expanders
Show will take place on June 22-25 in Munich, Germany. Visit us in hall B3, booth no.405.
To arrange scheduled meeting please contact [email protected]


12-14 May, 2015
San Jose, CA, USA
Laser Science to Photoni Applications

Altechna will be participating in CLEO:2015 exhibition in San Jose, USA on 12 - 14 of May. Visit us at booth 2328.


22-24 April
Pacifico Yokohama, Japan
Optics and Photonics International Exhibition

Altechna will be participating in OPIE'2015 exhibition in Pacifico Yokohama, Japan on 22-24 of April. Visit us at stand P-25.


16 - 19 March 2015
Moscow, Russia
Altechna will be participating in PHOTONICS. WORLD OF LASERS AND OPTICS'2015 exhibition in Moscow, Russia on 16-19 of March.
We would like to invite you to meet us at our distributors IC Specpostavka stand no. 3C30.
Fore more details please visit official exhibition website.

Laser Worlds of Photonics China

March 17-19, 2015
Shanghai New International Expo Center
Altechna will be participating in Laser World of Photonics China exhibition in Shanghai on 17-19 of March. Visit us at stand N2.2176.

Event archive