Description
The ZYGO 7702 is an industrial-grade dual-frequency Helium-Neon (He-Ne) laser head, belonging to ZYGO’s premium ZMI precision measurement series. Professionally engineered for ultra-precise laser interferometry, displacement detection, and industrial metrology applications, this laser module delivers stable wavelength output, excellent frequency consistency, and high beam quality. Featuring a compact integrated structure, fast warm-up response, and superior long-term stability, it supports 24/7 continuous operation in precision industrial and laboratory environments. Widely adopted in high-end positioning systems, optical measurement equipment, and automated precision machining platforms, it serves as a core optical signal source for micron and submicron-level precision detection.
ZYGO 7702
Physical Specifications (Dimension & Weight)
The ZYGO 7702 laser head adopts a miniaturized integrated industrial casing with precision optical internal layout, supporting standard fixed mounting and equipment embedded installation. Its compact and lightweight design saves installation space, ensures stable structural rigidity, and avoids beam deviation caused by vibration or displacement.
Overall Dimensions (L × W × H): 100 × 80 × 60 mm (3.94 × 3.15 × 2.36 inches)
Net Weight: 0.5 kg (1.1 lbs)
Mounting Method: Standard fixed hole mounting and embedded equipment installation
Structural Feature: Integrated anti-shock optical cavity structure, stable beam output
Shell Property: High-rigidity alloy casing with internal shock absorption design
Core Optical & Performance Technical Parameters
Equipped with high-precision resonant optical cavity and optimized polarization control technology, the ZYGO 7702 features ultra-stable wavelength output, low frequency drift, and high-purity beam mode, fully meeting industrial high-precision measurement standards.
Laser Type: Continuous Wave (CW) Dual-Frequency He-Ne Laser
Central Wavelength: 632.8 nm standard red optical wavelength
Output Optical Power: 0.4–1.2 mW stable adjustable power range
Beam Diameter: Optional 3 mm / 6 mm high-precision beam aperture
Spatial Mode: TEM₀₀-like fundamental mode, high beam purity
Polarization Mode: Orthogonal linear polarization, collinear dual-frequency output
Frequency Split Value: 20 MHz ± 1.6 kHz precise frequency difference
Frequency Stability: < 0.1 ppm/h long-term drift, ultra-low temperature coefficient
Internal Isolation: 30 dB built-in optical isolator to prevent backlight interference
ZYGO 7702
Start-Up & Response Parameters
This laser head features fast start-up and high-stability warm-up performance, balancing rapid deployment and long-term measurement accuracy for industrial continuous work scenarios.
Fast Beam Output Time: ≤ 10 seconds quick light emission
Full Stability Warm-Up Time: 25 minutes to reach complete optical stability
Long-Term Operating Consistency: Zero drift in short-cycle continuous measurement
Electrical & Interface Configuration Parameters
Matching industrial standard power supply and universal communication interfaces, the ZYGO 7702 realizes stable power drive and real-time signal linkage with upper measurement systems, supporting intelligent data collection and equipment linkage control.
Rated Power Supply: 12 VDC industrial standard power input
Rated Operating Current: 2 A stable working current
Communication Interfaces: USB 2.0 & RS-232 dual signal transmission ports
Compatible Systems: ZYGO ZMI 240X and 4X04 series measurement control boards
Environmental Adaptability & Industrial Grade Parameters
Optimized for precision industrial and laboratory environments, the ZYGO 7702 features wide temperature adaptability, excellent anti-interference and moisture-proof performance, ensuring consistent optical performance in complex working conditions.
Long-Term Stable Operating Temperature Range: -20°C to +70°C
Maximum Tolerable Humidity: 95% Non-Condensing Relative Humidity
Anti-Interference Performance: Anti-electromagnetic interference, anti-vibration optical structure design
Industrial Grade: Strict industrial aging calibration and optical precision testing
Intelligent Safety & Protection Mechanisms
The module integrates multiple built-in protection functions to avoid optical device damage and signal abnormality caused by power fluctuation, overheating and external interference, ensuring long-term safe and stable operation of precision optical systems.
Overvoltage & Undervoltage Protection: Automatic power anomaly identification and locking protection
Overtemperature Protection: Real-time temperature monitoring and power-off heat protection
Backlight Interference Resistance: Built-in optical isolator to avoid reflected light signal distortion
Circuit Overload Protection: Intelligent current limiting to protect internal optical and electrical components
Product Advantages & Application Scenarios
The ZYGO 7702 dual-frequency laser head stands out with its compact lightweight structure, ultra-high frequency stability, fast start-up response and excellent beam quality. The dual-frequency orthogonal polarization design enables high-precision laser interference measurement, effectively improving the accuracy and repeatability of displacement and position detection. With strong environmental adaptability and excellent system compatibility, it simplifies equipment integration and daily calibration work, greatly reducing operational and maintenance costs for precision measurement systems.
It is widely applicable to ultra-precision industrial displacement measurement, laser interferometer systems, CNC precision machining positioning, laboratory optical metrology, automated precision assembly equipment, and high-end industrial inspection instrumentation. All products undergo strict factory optical calibration and aging tests, equipped with a 12-month official warranty, providing reliable high-precision optical source guarantee for industrial and scientific precision measurement systems.
