Acousto-Optics Q-switch

Acousto-Optic Q-switch

The acousto-optic Q-switch is a special modulator that introduces high repetition frequency loss in the laser cavity. Rather than being continuous wave output, it causes the output to be composed of a series of light pulses with extremely high peak power and short pulse duration.

The Q-switch allows:

  • efficient control of Q factor
  • initial pulse suppression
  • high working efficiency
  • quick and easy adjustments
  • good stability
  • It is used in laser engraving, scribing, cutting, fine processing 
    and other applications which require high laser intensities.

    General Specifications for Q-Switch

    Operation Wavelength
    1.064 μm
    Voltage Standing Wave Ratio
    ≤1.2 ( Input Impedance: 50Ω)
    Working Frequency
    27MHz, 40MHz
    Beam Diameter
    3mm, 4mm or 5mm
    Reflectivity
    ≤0.2% (single side)
    Protection
    Automatic protection against high temperatures

     

    Part No:
    Operation Wavelength (μm)
    Beam Diameter (mm)
    Working Frequency (MHz)
    RF Power Output (W)
    Features
    QAOQU-5
    1.064
    3~5
    27
    50
    Water Cooled
    QAO27-3
    1.064
    3~7
    27
    50 X 2
    2 axes transducers, high working efficiency
    QAO41-3
    1.064
    1~2
    40
    12
    Conduction Cooled
    QAQ70-7
    1.064
    1~2
    80
    12
    Conduction Cooled

     

    Naming Conversions

    RF Driver for Acousto-Optic Q-switch

    The RF driver is designed as a control for the acousto-optic Q-switch. It modulates the radio frequency signal and outputs it to the Q-switch.

    The driver has the following characteristics:

  • Quick modulation rate
  • Convenient controls
  • Good stability
  • Special features such as first pulse suppression,             automatic protection and alarm
  • General Specifications for RF Driver

    Pulse Width
    120µs
    Pulse Rise Time
    ≤250ns
    Pulse False Time
    ≤120ns
    First Pulse Suppression Time
    1 - 800µs
    Output Impedance
    50Ω
    Voltage Standing Wave Ratio
    ≤1.2 (connected to 50Ω load)
    Power Supply
    AC 220V ± 15%
    Modulation Control Inputs
    Digital TTL
    Effective Level of Laser Output
    High/Low (Optional)
    Protection
    Automatic protection against high temperatures, open circuits and short circuits

     

    Part No:
    Working Frequency
    Power Output (W)
    Modulation Repetition Rate (kHz)
    Features
    Driver-QAOQU-5
    27 ± 0.1
    50 ± 3
    1 ~ 50
    Optional version with digital inputs available
    Driver-QAO27-3
    27 ± 0.1
    50x2
    1 ~ 50
    Dual signal outputs
    Driver-QAO41-3
    40.68 ± 0.1
    120
    1 ~ 300
    Compact design, DC input mode

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