Physics Lab Equipment

 LEOI-21 Michelson-1.jpg

1. He-Ne laser

2. Side stage

3. Beam expander

4. Fixed mirror

5. Beam splitter

6. Compensator

7. F-P fixed mirror

8. F-P movable mirror

9. Coarse micrometer

10. Movable mirror

11. Fine micrometer

12. Movable stage

13. Glass screen

E/E': Eye observation


  LEOI-21-large.jpg

Fringe image acquired by color camera


LEOI-21 Michelson & Fabry-Perot Interferometer

LEOI-21 Michelson & Fabry-Perot Interferometer

Features

  • Two Interferometer Modes

  • Rigid and Precise

  • Complete Solution

  • He-Ne Laser, Sodium-Tungsten Lamp, and Air Chamber Included

  • Optional VGA Video Camera for Fringe Image Display and Projection







Introduction

This equipment combines the historically important Michelson interferometer and the high resolution Fabry-Perot interferometer in one rigid and compact structure. Michelson interferometer is still an important instrument in today's physics laboratories and is used for observing two-beam interference phenomena. Fabry-Perot interferometer is for observing multiple-beam interference and measuring the fine structure of spectrum. Measurements are precise in two modes of operation. Switching between the two modes of operation and aligning components are relatively simple. This instrument is suitable for physics teaching at universities and colleges. Using an optional color camera, interference fringes can be acquired to a VGA display or a projector for real-time lecture demonstration.

 

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

DescriptionSpecifications
Flatness of Beam Splitter and Compensator0.1 λ
Coarse Travel of Mirror10 mm
Fine Travel of Mirror0.25 mm
Fine Travel Resolution0.5 μm
Fabry-Perot Mirrors30 mm (dia), R=95%
Wavelength Measurement AccuracyRelative error: 2% for 100 fringes
Dimension500×350×245 mm
Sodium-Tungsten LampSodium lamp: 20 W; Tungsten lamp: 30 W adjustable
He-Ne LaserPower: 0.7~ 1 mW; Wavelength: 632.8 nm
Air Chamber with GaugeChamber length: 80 mm; Pressure range: 0-40 kPa





Camera with VGA Port (Optional)

Sensor size: 1/4"
Resolution: 1280 × 1024
Pixel size: 2.8 μm × 2.8 μm
Bit: 8
Output format: VGA
Length measurement on screen with crosshairs
Function setting & operation: via keypad and menu


Part List

DescriptionQty
Interferometer Main Frame1
Ground Glass Screen1
Alignment Aperture1
Sodium-Tungsten Lamp with Power Supply1 set
He-Ne Laser with Power Supply1 set
Air Chamber with Gauge1 set
Manual Counter1
CMOS VGA Camera with Mount & Keypad (Optional)1 set


 LEOI-21 Michelson-1.jpg

1. He-Ne laser

2. Side stage

3. Beam expander

4. Fixed mirror

5. Beam splitter

6. Compensator

7. F-P fixed mirror

8. F-P movable mirror

9. Coarse micrometer

10. Movable mirror

11. Fine micrometer

12. Movable stage

13. Glass screen

E/E': Eye observation


  LEOI-21-large.jpg

Fringe image acquired by color camera


Copyright © Lambda Scientific Systems, Inc. 2010-2017. All rights reserved.