MST Laser and Controller Upgrade: Key Changes
By Zygo | Published: 2026-10-26
Category: How-to Guides
Learn what the MST Laser Upgrade and Controller Upgrade changes for your Verifire MST system, including compatibility and performance impacts.
Quick answer
The MST Laser Upgrade and Controller Upgrade from Zygo updates compatible Verifire MST systems to support external wavemeter MST configurations, pairing laser and controller components for improved measurement accuracy.
What the upgrade changes
The MST Laser Upgrade and Controller Upgrade is designed specifically for the Verifire MST platform. It replaces the existing laser and controller components to enable external wavemeter MST configurations, which can enhance wavelength accuracy for precision interferometry.
This upgrade is not a full system replacement—it focuses on the laser and controller pair. If your Verifire MST system was originally configured without an external wavemeter, this upgrade adds that capability without requiring a new interferometer.
Compatibility considerations
Before proceeding, verify that your Verifire MST system is compatible with the upgrade. The kit is intended for external wavemeter MST configurations and may not work with older internal wavemeter systems. Check your system's model number and consult Zygo support if uncertain.
The upgrade does not include the wavemeter itself—only the laser and controller components. You will need a separate external wavemeter to take full advantage of the upgrade.
How to plan your upgrade
- Check system compatibility: Confirm your Verifire MST system is configured for external wavemeter use. The upgrade is designed for this specific setup, not for all MST variants. If your system uses an internal wavemeter, this upgrade may not apply; contact Zygo for alternatives.
- Verify you have an external wavemeter: The upgrade only includes the laser and controller. You must have or acquire a compatible external wavemeter to complete the configuration. Without an external wavemeter, the upgrade cannot deliver its intended accuracy improvement.
- Order the upgrade kit: Purchase the MST Laser Upgrade and Controller Upgrade (SKU 6500-0921-01). Ensure the kit matches your system's revision level. Double-check the SKU with your system's serial number to avoid ordering the wrong variant.
- Install the components: Replace the existing laser and controller with the new units. Follow Zygo's installation guide or have a certified technician perform the swap to avoid voiding warranty. Keep the original components as backups in case you need to revert for troubleshooting.
- Calibrate with the external wavemeter: After installation, run the calibration procedure to integrate the wavemeter with the upgraded laser and controller. This ensures wavelength accuracy. Skipping calibration can lead to measurement errors; allocate time for this step.
Product facts
- MST Laser Upgrade and Controller upgrade: The MST Laser Upgrade and Controller Upgrade from Zygo is designed for the Verifire MST platform, supporting external wavemeter MST configurations. This means the upgrade is not a generic component swap—it targets a specific use case for enhanced wavelength control.

MST Laser Upgrade and Controller upgrade
