QS30XY-AG Dual-Axis, Ø30 mm Beam Galvo System, Protected Silver Mirrors (Power Supply & Cables Sold Separately)

These new Thorlabs QS Series high-speed scanning galvanometer mirror positioning systems are designed for integration into OEM or custom laser beam steering applications. Models are available for beam diameters up to 45 mm. Each system includes a dual-axis galvo scan head with mirrors and matched driver cards. A compatible power supply and command cable(s) are sold separately below. The user must provide a function generator or other analog voltage output device in order to operate the servo drivers. The mirrors are offered with one of four coatings, as shown in the table to the right. Custom coatings are available upon request.  We also offer single-axis systems with the galvo scanners used in these scan heads.

Servo Driver Board
These closed-loop servo drivers interpret the signals from the position detecting system inside the motor and produce the drive voltage required to rotate the mirror to the desired position. High bandwidth ensures following of analog command waveforms with speed and accuracy.

Both drivers feature proportional-integral-derivative (PID) servo driver circuits with advanced current damping for high performance. The drivers incorporate low-noise components to maximize the signal-to-noise ratio for better accuracy and low-drift components to reduce the effects of temperature variation. A notch filter is selected and tuned for each unique mirror-galvo combination to maximize system bandwidth for faster, more accurate scanning. These systems are ideal for use in applications including step-and-hold positioning, vector positioning (e.g., laser marking), and raster positioning (printing or laser scanning microscopy).

Servos are optimized for high-speed, precise positioning for all applications. Servos for scanners with ≥15 mm maximum beam diameters additionally feature dual-output power amplifiers to keep power supply requirements modest for larger motors without sacrificing performance. Servo driver circuits provide soft start/stop operation, open circuit AGC fail, and over/under-voltage protections. Onboard status LEDs indicate servo status and fault conditions and a diagnostic port provides position, velocity, error, and current information. Each driver-galvo-mirror set is tested and tuned to specification. The unique serial number of the galvo is noted on its associated driver board.

• Moving Magnet Motor Design for Fast Response (250 µs for 0.4° Optical with Mirrors for Ø7 mm Beams)
• High-Precision Optical or Capacitive Mirror Position Detection (See Table to the Right for Details)
• Four Mirror Coatings Available:
  • Protected Silver, 450 to 10.6 µm
  • Nd:YAG Laser, 3rd Harmonic, 355 nm
  • Nd:YAG Laser, 1064 nm
  • CO2 Laser, 10.64 µm
• High Reflectance at 633 nm for Alignment Laser
• Analog PID Control Electronics with Current Damping
• 24" (610 mm) Drive Cable Included
• Power Supply, Power Cables, and Command Cables Available Separately
• Custom Coatings Available upon Request 

Applications

• Laser Marking
• Additive Manufacturing
• Laser Engraving
• Welding
• Micromachining
• Laser Drilling
• Ablation/Surface Texturing
• Cutting/Scribing
• Laser Scanning Microscopy
• Laser Projection