Menlo-Systems-Synchronization-ASOPS-Systems

Menlo Systems Synchronization & ASOPS Systems

The asynchronous optical sampling (ASOPS) technique allows high-speed scanning over some nanoseconds of time delay without a mechanical delay line. The SYNCRO-RRE, also available as stand-alone unit, provides state-of-the art phase lock electronics. Wavelength Opto-Electronic is the partner of Menlo Systems brand of synchronization & ASOPS systems for Southeast Asia.​

 ASOPS DUAL COLOR
ASOPS TWIN
Repetition Rate100 MHz250 MHz
Repetition rate offset tuningΔf = -10 kHz .. + 10 kHz, in steps of 10-5 HzΔf = -10 kHz .. + 10 kHz, in steps of 10-5 Hz
Time measurement window10 ns4 ns
Scan duration 1/ Δf0.1 ms @ 10kHz offset, 1 s @ 1 Hz offset0.1 ms @ 10kHz offset, 1 s @ 1 Hz offset
Data Point Increment Δf / Rep²1 ps @ 10 kHz, 0.1 fs @ 1 Hz160 fs @ 10 kHz, 0.016 fs @ 1 Hz
Laser Heads  
Central Wavelength1560 nm / 780 nm
1560 nm
Average Power >100 mW / >100 mW >75 mW / >75 mW
Pulse Energy >0.4 nJ>10 nJ
Pulse Width<90 fs / <120 fs
<150 fs / <150 fs (after 6-m PM fiber)
Output Port2 x free space2 x fiber-coupled FC/APC
Piezo Tuning Range>100 Hz>625 Hz
Piezo Bandwidth>30 kHz>30 kHz
Stepper Motor Turning Range>330 kHz>2 MHz
Trigger SignalTTL level at offset frequency, <10 ns rise timeTTL level at offset frequency, <10 ns rise time
 RRE-SYNCRO
RMS Timing Jitter<200 fs [0.1 Hz–500 kHz] or same as reference, whichever applies first*
INPUT SIGNALS 
External Reference optionsMaster signal at repetition rate
 Harmonic Master signal (RF or optical)
 10 MHz (provided by customer or generated internally)
Repetition RateSignal level -20…-10 dBm
OUTPUT SIGNALS 
Stepper MotorStepper motor control, Sub-D, 9 pin
PiezoPiezo control, BNO
ErrorError signal for monitoring, BNC
Repetition Rate100 MHz
Repetition Rate Offset Tuning RangeΔf = -10 kHz .. + 10 kHz, in steps of 10-5 Hz
Time Measurement Window*10 ns
Data Point Increment **1 ps @ 10 kHz, 0.1 fs @ 1 Hz
RMS Timing Jitter (0.1 Hz -500 kHz)<150 fs
RF Referenceexternal or internal 10 MHz reference
Laser Heads 
Wavelength1560 nm 
Average Output Power >100 mW (from each laser)
Output Portfiber-coupled FC/APC
Pulse Length<90 fs after 1 m PM fiber
Trigger SignalTTL level at offset frequency, <10 ns rise time
  • ASOPS

In time-resolved measurements an ultrafast pulse triggers a reaction and a second pulse takes a snapshot of the induced change. By shifting the arrival time of the probe pulse with respect to the pump pulse the stimulated process can be followed in time.The asynchronous optical sampling technique allows high-speed scanning over some 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.

The lasers can be also locked to the same repetition rate value and by shifting the relative phase between the laser pulses, the system will allow measurements in a reduced time window of some 100 ps. Switching between the two modes of operation can be done at the touch of a button.

  • RRE-SYNCRO

The main application is the synchronization of a pulsed laser to a radio frequency reference, derived from a radio frequency clock or an optical reference clock. An embedded microcontroller for the stepper motor and Piezo control in laser cavity ensures long-term stability.

  • Optical Sampling Engine

In time-resolved measurements, an ultrafast pulse triggers a reaction and a second pulse takes a snapshot of the induced change. By shifting the arrival time of the probe pulse with respect to the pump pulse the stimulated process can be followed in time. The OSE is a one-of-a-kind compact Optical Sampling Engine that includes two femtosecond Erbium fiber lasers, synchronized with a high-accuracy phase-locking electronics. It allows for high-speed scanning over many nanoseconds of time delay without a mechanical delay line. In just 19” 3U, it features a fully automated turn-key asynchronous optical sampling system (ASOPS).

The ultrafast lasers delivering the pump and probe pulses are locked together at a tunable repetition rate difference. An optically generated TTL trigger output is integrated for triggering customer data acquisition devices. Due to its modular design, the OSE is the most versatile dual laser system on the market: Additional external modules are retrofittable, to provide higher powers, customized spectra and pulse lengths. The underlying proprietary technology based on figure 9® lasers is well-suited even for demanding environments.

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