Acousto-Optic Q-Switch

Lasers & Detectors 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.

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
70
12
Conduction Cooled

 

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
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

 

RF Driver For Acousto-Optic Q-Switch
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
50×2
1 ~ 50
Dual signal outputs
Driver-QAO41-3
40.68 ± 0.1
120
1 ~ 300
Compact design, DC input mode

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