Description
Michelson and Fabry-Perot interferometer teaching kit
Explore the LEOI-21 optics experiment kit for Michelson and Fabry-Perot interference demonstrations and related wavelength or refractive-index experiments described in the catalogue. Tell us your teaching objectives, laboratory bench space and display requirements. Request an itemised quotation for the optical assembly, light sources, air chamber and accessories; specify separately if camera-based fringe display is required.
Laboratory equipment enquiries across Jharkhand and West Bengal
Dhanbad Sales welcomes enquiries from individual buyers, schools, colleges, universities, training centres, research and industrial laboratories, healthcare education providers, NGOs and government institutions throughout Jharkhand and West Bengal. Product suitability is assessed against your specific teaching or laboratory application.
Share your specification or syllabus, quantity, budget, delivery city and PIN code, and required timeline. Identify any setup, demonstration, calibration or documentation requirements separately. Exact specifications, included accessories, current availability, price, applicable warranty and delivery or support feasibility are confirmed in the quotation. No certification, calibration service or manufacturer authorisation is implied unless confirmed in writing.
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Features
- Two Interferometer Modes
- Rigid and Precise
- He-Ne Laser, Sodium-Tungsten Lamp, and Air Chamber Included
- Optional VGA Video Camera for Fringe Image Display and Projection
Introduction
The LEOI-21 Michelson & Fabry-Perot Interferometer combines two fundamental interferometric setups—Michelson interferometer and Fabry-Perot interferometer—in one compact and rigid structure. The Michelson interferometer is essential for observing two-beam interference, whereas the Fabry-Perot interferometer enables the observation of multiple-beam interference and the measurement of the fine structure of spectra.
This equipment offers precise measurements in both interferometer modes and can easily switch between them. The setup is user-friendly, with straightforward component alignment, making it ideal for university and college physics teaching. An optional color camera can be used to display interference fringes on a VGA monitor or project them for real-time demonstrations in lectures.
The instruction manual contains comprehensive materials including experimental configurations, principles and step-by-step instructions. Please click Experiment Theory and Contents to find more information about this apparatus.
Using this instrument, the following experiment examples can be conducted:
1. Two-beam Interference observation
2. Equal-inclination fringe observation
3. Equal-thickness fringe observation
4. White-light fringe observation
5. Wavelength measurement of the Sodium D-lines
6. Wavelength separation measurement of the Sodium D-lines
7. Measurement of the refractive index of air
8. Multi-beam interference observation
9. Measurement of the He-Ne laser wavelength
10. Interference fringe observation of the Sodium D-lines
11. Interference fringe acquisition by color camera for VGA display or projector (optional)
Specifications
| Description | Specifications |
| Flatness of Beam Splitter and Compensator | 0.1 λ |
| Coarse Travel of Mirror | 10 mm |
| Fine Travel of Mirror | 0.25 mm |
| Fine Travel Resolution | 0.5 μm |
| Fabry-Perot Mirrors | 30 mm (dia), R=95% |
| Wavelength Measurement Accuracy | Relative error: 2% for 100 fringes |
| Dimension | 500×350×245 mm |
| Sodium-Tungsten Lamp | Sodium lamp: 20 W; Tungsten lamp: 30 W adjustable |
| He-Ne Laser | Power: ~1.5 mW; Wavelength: 632.8 nm |
| Air Chamber, Pump with Gauge | Chamber length: 80 mm; Pressure range: 0-40 kPa |
| Camera with VGA Port (Optional) | Sensor size: 1/3″ |
| Resolution: 1920 × 1024 | |
| Pixel size: 2.8 μm × 2.8 μm | |
| Up to 32 adjustable crosshair lines | |
| Output format: VGA | |
| Function setting & operation: via rear keypad and menu |
Part List
| Description | Qty |
| Interferometer Main Frame | 1 |
| Ground Glass Screen | 1 |
| Alignment Aperture | 1 |
| Sodium-Tungsten Lamp with Power Supply | 1 set |
| He-Ne Laser with Power Supply | 1 set |
| Air Chamber with Gauge | 1 set |
| Manual Counter | 1 |
| CMOS VGA Camera with Mount & Keypad (LLD-3, Optional) | 1 set |
