Dispersion Compensation

Dispersion Compensation

Pulse Compression & Dispersion Compensation with femtoControl for Femtosecond Pulses


Pulse Compression & Dispersion Compensation for Microscopy


Dispersion Control

femtoControl is a motorized dispersion compensation unit for optimization of the duration of femtosecond laser pulses.

A compact boxed system for the spectral range of Ti:Sa lasers is available off the shelf. For applications that require extreme GDD compensation, whether in 2P or 3P microscopy, a range of customer specific solutions are available.

Femtosecond pulses which pass through any kind of optical material experience dispersion that can lead to temporal broadening of the ultrashort pulses with subsequent reduction in peak power. Thus, the experimental conditions are changed and degraded. femtoControl compensates for material dispersion by applying the inverse amount of dispersion to the pulse. This is generated by a pair of prisms on motorized translation stages allowing continuous adjustment of the pulse length.

At a Glance

  • Ideal for two-photon microscopy
  • Three-photon microscopy available with customized setups
  • Wide range of dispersion compensation
  • User-friendly operation
  • Zero GVD (Group Velocity Dispersion) function
  • Automated prism drive corresponding to stored GVD curves
  • Also available as femtoControl Kit to cover extreme GDD (Group Dispersion Delay) ranges as well as special wavelengths

3-Photon Microscopy Dispersion Compensation

Read about dispersion compensation in three-photon microscopy

Basics about Pulse Compression

Read about the basics of pulse compression, dispersion, prism & grating compressor, GVD


Dispersion Correction for Multi-photon Microscopy

femtoControl can help to achieve more crisp and clearer microscope images especially for multi-photon microscopy. Laser pulses with a pulse duration in the ultrafast range. i.e. < 10 picoseconds (ps) are stretched by the dispersion of the optical material when passing through optical components like windows or lenses. Elaborate dispersion management by the means of a pulse compressor can compensate this effect. APE developed femtoControl, a compact pulse compressor for efficient, easy-to-use and remote controlled optimization of the pulse duration. FemtoControl operates following the principle of a four-prism compressor. Without further adjustment  and without changing the interval between the prisms femtoControl is able to continuously compensate negative as well as positive dispersion that Ti:Sapphire laser pulses in the wavelength range of 690 to 1100 nm with input lengths between 80 to 200 femtoseconds (fs) may suffer from.


Specifications

femtoControlNIR - Ti:SaNIR - BroadbandIR
Wavelength range
others on request
680 nm … 1080 nm650 nm … up to 1320 nm1150 nm … up to 2500 nm
GDD range-13,000 fs2 … 0 fs2 at 800 nm-5,000 fs2 … 5,000 fs2 at 800 nm-5,500 fs2 … 13,000 fs2 at 1300 nm
0 fs2 … 14,000 fs2 at 1700 nm
Input polarizationLinear, horizontal
Input beam diameter (1/e2)<4 mm
Transmission>90% at 800 nm>85% at 800 nm>65% at 1300 nm
>70% at 1700 nm

Datasheets & Brochures

femtoControl (pdf / english)


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