AA-DD. Scanning Real-Time Autocorrelator
![Dimensional drawing of an AA-20DD-6PS optical head, dimensions in [mm]](https://avesta.ru/wp-content/uploads/2017/04/dimensions-AA-20DD-6ps_1280X864.png)
![Dimensional drawing of an AA-10DD-12PS optical head, dimensions in [mm]](https://avesta.ru/wp-content/uploads/2017/04/dimensions-AA-10DD-12ps_1280X864.png)
![Dimensional drawing of an AA-10DD-30PS optical head, dimensions in [mm]](https://avesta.ru/wp-content/uploads/2017/04/dimensions-AA-10DD-30ps_1280X864.png)
![Dimensional drawing of an AA-DD electronics module, dimensions in [mm]](https://avesta.ru/wp-content/uploads/2017/04/dimensions-AA-DD-CU_1280X864.png)
| AA-20DD-6PS | AA-10DD-12PS | AA-10DD-30PS | |
| Possible full wavelength range* | 450-3200 nm | ||
| Subranges* (exchangeable photodetector/beam splitter pairs) |
V: 450-700 nm R1: 700-1300 nm R2: 1300-2000 nm R3: 1950-3200 nm |
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| Input pulse duration range | 20 fs - 6 ps | 10 fs - 12 ps | 10 fs - 30 ps |
| Input pulse repetition rate | >10 kHz | >10 Hz | >10 Hz |
| Autocorrelation | Collinear interferometric (fringe), intensity collinear (selectable modes) | Collinear interferrometric (fringe), intensity collinear, intensity non-collinear (selectable modes) | |
| Sensitivity (typical) | 100 mW2 (10-4 W2; Pav × Ppeak) | ||
| Input polarization | linear, horizontal (vertical upon request) | ||
| Scan rate | 0.1-20 Hz | ||
| Linear distortion | <1% | ||
| PC connection | USB | ||
| Required equipment | Windows PC | ||
| Fiber input (optional) | FC/PC or FC/APC (other types on request) | ||
| Signal source and detector type | two-photon conductivity in semiconductors | ||
| Dimensions, mm | 132x129x117 - optical unit 170x190x36 - control unit |
133x148x117 - optical unit 170x190x36 - control unit |
185x180x145 - optical unit 170x190x36 - control unit |
| * - the indicated subranges are covered by exchangeable photodetector/beam splitter pairs. I.e. the customer may choose from one subrange of their choice (to cover a desired corresponding wavelength region indicated in the table above) to four sets for complete full wavelength range coverage. Please indicate the required subranges for precise quotation and information when making a request for the product. |
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The AA-DD real-time autocorrelator offers smooth and fast measurement of femtosecond and picosecond pulse duration. The autocorrelator can cover several wavelength ranges by using up to 4 interchangeable photodetectors and optics. Two separate ranges can also be covered upon request. Input pulse duration ranges from 10 fs to 30 ps for easy monitoring of different laser systems, especially femtosecond and picosecond oscillators (for low repetition rate amplifier monitoring <10 kHz please also see our ASF single-shot autocorrelator series).
The device features USB interface and can be easily hooked up to a PC with Windows OS, LabView drivers are also included in the package. The software is supplied with the device and comprises several useful tools. The acquired pulse duration data can be visualized, stored or exported to a .txt or .dat file. Autocorrelation function and final FWHM pulse duration in femtoseconds are calculated and displayed in real-time. Moreover, Gaussian or sech2 fitting options are available, intensity function may also be observed. The statistical viewer feature allows the comparison of data acquired from several separate pulse measurements.
The tiny body of the AA-DD flawlessly fits any experimental setup with strict space requirements. We also offer an optional fiber input for fast and reliable pulse duration measurement in various optical fibers. Moreover, the autocorrelator in this case still maintains the free-space measurement capability.
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Related products
| Wavelength tuning range | 750-860 nm |
| Pulse duration | <12...50 fs |
| Average power | 230...1300 mW |
| Repetition rate | 80 MHz |
| Possible wavelength range | 700-1600 nm |
| GVD range at 800 nm | from -13800 to +16500 fs^2 |
| Transmission | >90% |
| Input beam diameter | up to 4 mm |
| Wavelength | 1050 nm |
| Pulse duration | 70...150 fs |
| Average power | up to 12 W |
| Repetition rate | 80 MHz |
| Pulse duration | 35...140 fs |
| Tuning range | 1230-1270 nm |
| Output power | up to 800 mW |
| Pulse energy | up to 20 nJ |
| Pulse repetition rate | 30/96 MHz |
| Wavelength | 780 and 1560 nm |
| Average power | >200/440 mW |
| Pulse duration | <100 fs |
| Repetition rate | 65 MHz |
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