The APE ScanDelay is an optical delay line allowing the introduction of a well-defined time delay into an optical path. The delay is periodically controlled by a fast scanning shaker at a frequency of up to 20 Hz.
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The APE ScanDelay is an optical delay line allowing the introduction of a well-defined time delay into an optical path. The delay is periodically controlled by a fast scanning shaker at a frequency of up to 20 Hz.
The heart of APE’s optical delay line series is a special linear translation stage that is supplied together with appropriate control and drive electronics. The linear drive has been designed especially for optical applications. It combines low moving mass with compactness, reaching a high speed, as well as high precision and resolution. The delay drive moves frictionless, has a large and precise travel range, and allows for very small displacements without any stick-slip-effects.
Thus scanDelay is capable of generating fast wide scans as well as smallest delays without any stick-slip effects. The actual position is measured in real time by an analog photo-electric system with high resolution and a wide dynamic range. The linear drive allows an ultra-precise scanner movement and leads to an excellent scan-to-scan reproducibility.
| scanDelay | 15 | 50 | 150 |
|---|---|---|---|
| Scan Range | 15 ps (± 1.125 mm) | 50 ps (± 3.75 mm) | 150 ps (± 11.25 mm) |
| Scan mode: internal generator | 0.1 Hz … 20 Hz | 0.1 Hz … 10 Hz | |
| Scan mode: externally triggered | 0.01 Hz … 20 Hz | 0.01 Hz … 10 Hz | |
| External trigger input | TTL, 20 Hz … <50 kHz fast frequency divider for approx. 80 MHz optionally available |
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| Position output signal | ± 10 V / 15 ps | ± 10 V / 50 ps | ± 10 V / 150 ps |
| Trigger output | TTL programmable position |
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| Linearity of position signal | <0.5 % | ||
| Retroreflector coating | Ag protected other on request |
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| Clear aperture | 1″ | 1/2″ | |
| Computer Interface | USB | ||
| Software | Included | ||
| LabView driver for user-defined remote control setups | Included | ||
Pump-probe experiments
Optical delay lines
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Photonic Solutions Ltd
Unit 2.2 Quantum Court
Heriot-Watt University Research Park
Edinburgh
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