• High Speed Scanning System (Metric) with Analog Control Electronics
• Large Beam Diameter, Dual-Axis Kit
• Easily Integrated into OEM Systems
• Moving Magnet Motor Design for Faster Response
• High-Precision Optical Mirror Position Detection
• Protected Silver Mirror Coating

Thorlabs’ GVS012/M Scanning Galvanometer Mirror System (Metric) is highspeed (300 or 400 µs small angle response time) mirror positioning systems designed for integration into OEM or custom laser beam steering applications such as laser scanning, laser microscopy, and laser marking. The GVS012/M is a dual-axis system designed for large diameter beams (<10 mm). Each assembly includes a dual-axis galvo motor/mirror assembly, together with associated driver cards and heat sinks. A low noise, linear PSU (GPS011) and a motor/mirror assembly heatsink (GHS003) are available separately.

The assembly consists of a galvanometer-based scanning motor with an optical mirror mounted on the shaft and a detector that provides positional feedback to the control board. The moving magnet design for the GVS012/M galvanometer motors was chosen over a stationary magnet and rotating coil design in order to provide the fastest response times and the highest system resonant frequency. The position of the mirror is encoded using an optical sensing system located inside of the motor housing. Due to the large angular acceleration of the rotation shaft, the size, shape, and inertia of the mirrors become significant factors in the design of high-performance galvo systems. Furthermore, the mirror must remain rigid (flat) even when subjected to large accelerations. All these factors have been precisely balanced in our GVS012/M galvo system in order to match the characteristics of the galvo motor and maximize performance of the system.

• Maximum Beam Diameter: 10 mm
• 2 Axis System Beam Offset: 15 mm
• Maximum Scan Angle (Mechanical Angle): ±20°
• Wavelength Range: 400-2000 nm
• Reflectivity: >87% at 400 to 800 nm, >98% at 800 to 2000 nm
• Small Angle Step Response: 400 µs
• Repeatability: 15 µrad
• Typical Resolution: 0.0008° (15 µrad)
• Average Galvo Current: 1 A
• Peak Galvo Current: 10 A
• Optical Position Sensor Output Range: 40 to 80 µA
• Damage Threshold: 100 W/cm²
• Motor and Position Sensor Linearity: 99.9%
• Scale Drift (Max): 40 ppm/°C
• Zero Drift (Max): 10 µrad/°C
• Coil Resistance: 2.2 O ± 10%
• Coil Inductance: 150 µH ± 10%
• Rotor Inertia: 0.02 g×cm²
• Operating Temperature Range: 0 to 40 °C
• Motor Weight: 94 g