Helium Neon Laser Mode Analysis Physics Lab Experimental Instrument

This experimental system is designed for laser mode analysis and characterization. It uses a visible gas laser source with a well-defined mode structure, providing a stable and easy-to-align optical setup for studying laser beam properties and resonator behavior.

The system enables observation and analysis of transverse and longitudinal laser modes, helping users understand the importance of mode control in precision optical applications. Through practical experiments, learners can explore laser performance evaluation techniques commonly used in measurement, spectroscopy, frequency stabilization, and optical instrumentation.

• Laser mode analysis
• Transverse mode observation
• Longitudinal mode observation
• Resonator characteristics study
• Laser beam quality evaluation
• Optical alignment and adjustment
• Spectral distribution analysis
• Fundamental laser performance testing

Optical Rail :

• Precision hard aluminum alloy guide rail, length 1 m

Sliding Stage Set :

• Adjustable optical component mounting platform

Laser Source :

• Wavelength: 632.8 nm
• Output power: ≤ 1.5 mW
• Stable resonator configuration

Optical Receiver :

• High-sensitivity photodetector with fast response characteristics

Screen & Aperture Assembly :

• Used for optical path alignment and observation
• Transparent aperture diameter: 3 mm

Scanning Interferometer :

• Concave reflector radius of curvature: 20.56 mm
• Reflectivity: 99%
• Finesse constant: > 100

Mounting Fixtures :

• Universal round and square optical component holders

Optional Accessories

• Oscilloscope
• Computer Interface System
• Printer