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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.
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 www.femtosolutions.eu
How our business is done
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
- fs general and polarization optics
- fs laser and nonlinear crystals
- fs accessories
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.
For more information please contact [email protected]
Group delay dispersion measurements
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 www.altechna.com/metrology.
Altechna products at FindLight
At www.findlight.net platform you may find Altechna‘s laser related components and solutions for laser manufacturers, industrial clients and R&D labratories.
Tradeshows and events
Laser World of Photonics
- 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
To arrange scheduled meeting please contact [email protected]
PHOTONICS. WORLD OF LASERS AND OPTICS'2015
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.