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Laser Products

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ASF. Single-Shot Autocorrelator for Femtosecond and Picosecond Pulses

● Possible wavelength range from 400 nm to 2200 nm
● 5 fs to 15 ps possible pulse duration measurement
● USB interface with Windows PC software and LabView drivers in a standard package
● CCD 2D detector for precise data acquisition with lowest error
● 1 uJ single-shot sensitivity

    The ASF single-shot autocorrelator is designed for monitoring the pulse duration of ultrafast oscillators and amplifiers, as well as for real-time amplifier systems tuning. The CCD camera registers the transverse section of the non-collinear generation of the second harmonic of the input radiation (the SH is generated in a non-linear crystal). PC USB interface and Windows acquisition software provide for smooth and easy data transition and registration, while additional LabView-compatible drivers offer extended flexibility and on-line control in complex multi-stage experimental setups.

    There are four basic models of the ASF family covering a broad possible operating wavelength range.

    The ASF-5 system allows measurements of few-cycle pulses with pulse duration as short as 5 fs. The system is based on non-dispersive beam splitting technique providing best accuracy for few-cycle pulse measurement.

The ASF-15 system is a compact unit for routine characterization of low-repetition-rate ultrafast amplifier output as well as seed oscillator output in the range of 15 fs to 200 fs.

    The ASF-50 and the ASF-200 units offer extended longer pulse duration measurement limit for ultrashort-pulse amplifier development and tuning. The ASF-200 unit is also used for precise control of pulse duration at the output of commercial laser systems with a tunable compressor unit.

    Please feel free to enquire about custom pulse durations and wavelength ranges.


Applications:

Ultrafast Laser Diagnostics, Accessories and Components

  • Femtosecond Oscillator Pulse Duration Measurement

  • Femtosecond Pulse Duration Measurement and Dispersion Characterization

  • Comparison of Dispersion Values, Determining Dispersion of Various Optical Elements

  • Femtosecond and Picosecond Pulse Duration and Near Contrast Measurement

  • Femtosecond and Picosecond OPA Pulse Duration and Near Contrast Measurement

  • Single-Shot Femtosecond Pulse Duration Measurement

  • Amplifier Design

  • Automation of Complex Experimental Setups



Specifications:



ASF-5ASF-15ASF-50ASF-200
Possible wavelength range400-2200* nm450-2200* nm
Input pulse duration range5-200 fs15-200 fs50 fs - 2 ps

200 fs - 10** ps

Required pulse energy

single-shot mode: from 1 uJ at <200 fs; up to 100 uJ at 10 ps;

multiple-shot mode: from 1.2 nJ at <100 fs, 80-100 MHz (~100 mW average power

Input pulse repetition rate

single-shot...150 MHz;

single-shot mode (registration of single pulses): from single-shot to 50 kHz;

multiple-shot mode (averaging of 2 or more pulses): >50 kH

Input polarization

USB with Windows PC acquisition and analysis software (included in the standard package)

Data interface

Dimensions (LxWxH)

 248x54x54 mm156x120x70 mm215x120x70 mm430x240x80 mm

Input beam height range (customized on request)

47/67/87/107 mm (fixed, select one value)

56-110 mm (adjustable)

64-110 mm (adjustable)

64-110 mm (adjustable)

 * - exact wavelength range is quoted based on each customer's requirements;

** - from 500 fs to 15 ps on request; combined ranges from 100 fs may also be possible upon request for some cases.