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Asynchronous Optical Sampling (ASOPS) Technique


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Asynchronous Optical Sampling (ASOPS) Technique

Applications

  • Two-Color Pump-Probe Spectroscopy
  • Time-Domain THz Spectroscopy
  • Material Characterization

The Asynchronous Optical Sampling (ASOPS) technique allows high-speed scanning over a few nanoseconds of time delay without a mechanical delay line. The ultrafast lasers delivering the pump and probe pulses are locked together at a tunable repetition rate difference.

Advantages of the ASOPS technique over conventional sampling techniques requiring a mechanical delay stage include faster data acquisition times and the absence of limitations that are common to moving components (e.g., beam pointing instability and limited scanning speed).

Please note that the ASOPS Systems are available directly from Menlo Systems, Inc. within the United States and from Menlo Systems GmbH outside the United States.
United States
Phone:
"+1-973-300-4490
E-mail: ussales@menlosystems.com
Outside United States
Phone:
+49-89-189166-0
E-mail: sales@menlosystems.com
Item #ASOPS-TWIN-250ASOPS-DUAL-COLOR
Repetition Rate250 MHz100 MHz
Repetition Rate Offset Tuning Range1 Hz - 10 kHz1 Hz - 10 kHz
Time Measurement Window4 ns10 ns
Scan Duration*1 s - 0.1 ms1 s - 0.1 ms
Data Point Increment**0.016 - 160 fs0.1 fs - 1 ps
RMS Timing Jitter (0.1 Hz to 500 kHz)<150 fs<150 fs
Laser HeadsTWIN M-Fiber SyncC-Fiber SyncC-Fiber Sync 780
Wavelength1560 nm1560 nm780 nm
Average Output Power>75 mW (From Each Laser)>30 mW>65 mW
Output PortFiber-Coupled FC/APCFree SpaceFree Space
Pulse Length<150 fs after 6 m PM Fiber<150 fs
Tuning Range with Piezo>625 Hz>100 Hz
Piezo Bandwidth>30 kHz>30 kHz
Tuning Range with Stepper Motor>2 MHz>330 kHz
Trigger SignalTTL Level at Offset Frequency; <25 ns Rise Time

*Scales inversely with the repetition rate offset.
**Scales with the ratio of the repetition rate offset and the repetition rate squared.

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ASOPS-TWIN-250 Support Documentation ASOPS-TWIN-250 250 MHz ASOPS System for 1560 nm CALL
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ASOPS-DUAL-COLOR Support Documentation ASOPS-DUAL-COLOR 100 MHz ASOPS System for 1560 and 780 nm CALL
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