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ZYGO 7702 8070-0102-01X – Dual-Frequency HeNe Laser Head for Precision Metrology
Product Overview
The ZYGO 7702 8070-0102-01X is a frequency-stabilized dual-frequency helium-neon (HeNe) laser head designed for high-precision interferometric measurement applications. It delivers a stable 632.8 nm output with exceptional noise resistance, addressing challenges of sub-nanometer measurement accuracy, thermal drift, and multi-axis synchronization in semiconductor manufacturing, optical component testing, and precision machine calibration. This laser head seamlessly integrates with ZYGO interferometers and measurement boards, enabling reliable displacement, flatness, and surface profile analysis in demanding industrial environments requiring micron to sub-nanometer level detection capabilities.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | 7702 8070-0102-01X |
| Manufacturer | ZYGO |
| Product Type | Dual-Frequency Helium-Neon Laser Head |
| Power | >400 µW (6mm beam diameter variant) |
| Communication / Protocol | Compatible with ZYGO 4104C measurement boards |
| Operating Temperature | 15°C to 35°C |
| Mounting | Standard optical table mounting with kinematic adjustment |
| Dimensions (HxWxD) | 100mm x 80mm x 60mm |
| Weight | 1.2kg |
| Typical Interfaces | Optical output port, power connector, synchronization signal terminals |
| Compliance | ISO 17025, CE, FDA 21 CFR Part 1040.10 |
ZYGO 7702 8070-0102-01X
Key Features and Benefits
- Dual-frequency operation at 632.8 nm enables heterodyne detection for enhanced noise immunity and measurement stability
- Frequency stabilization to 20 MHz ± 1600 Hz minimizes long-term drift for consistent precision over extended measurement cycles
- 6mm beam diameter variant provides optimal signal-to-noise ratio for long-distance measurements up to 60m
- Kinematic mounting system allows precise alignment for multi-axis measurement configurations (up to 16 axes)
- Low power consumption and air-cooled design ensure continuous operation without thermal management concerns
- Compatible with ZYGO PC200 and other interferometer systems for seamless integration into existing metrology setups
- Built-in safety interlocks prevent accidental laser exposure during maintenance or system configuration
Related Models
ZYGO 7701: Single-frequency HeNe laser head for basic interferometric applications with lower precision requirements.
ZYGO 7702 8070-0102-31: Higher power variant (>525 µW) for challenging optical path configurations requiring increased signal strength.
ZYGO 7703: Fiber-coupled laser head for remote measurement applications in confined spaces.
ZYGO PC200: Interferometer controller module optimized for use with 7702 series laser heads for real-time data processing.
Installation and Maintenance
Mount the laser head on a stable optical table using the kinematic base to minimize vibration interference. Ensure proper alignment with interferometer components using the integrated adjustment screws for optimal beam path. Connect to a regulated power supply (24VDC) and verify frequency stability via the synchronization signal output. Perform annual calibration to maintain sub-nanometer accuracy and inspect optical output windows quarterly for contamination. Store in a dry environment (20-60% RH) when not in use to prevent optical degradation and ensure long-term reliability.
| ZYGO ZMI – 4004 | ZMI-4104C | ZMI5020 |
