Rich experimental contents
Convenient in operation
Stable & reliable experimental performance
LEOI-57 apparatus for measuring characteristics of semiconductor laser consists of a suitcase (including temperature control device, display of angle sensor, laser power meter, laser power supply, voltmeter, etc.), semiconductor laser device (including heating device, cooling fan, and angle sensing device, etc.), slide rail, polarizer and analyzer, optical power detector, and so on. It is designed to measure the electrical and optical characteristics of a small-power semiconductor lasers (optical power less than 2 mW). The apparatus has features of rich experimental contents, convenient in operation, stable and reliable experimental performance.
Using this apparatus, students can conduct the following experiments on a semiconductor laser:
1. Measure the far-field distribution of the beam and calculate its vertical and horizontal divergent angles.
2. Measure the voltage-current characteristics.
3. Measure the relationship between output optical power and current, and acquire its threshold current.
4. Measure the relationship between the output of optical power and current at different temperatures, and analyze its temperature characteristics.
5. Measure the polarization characteristics of the output light beam and calculate its polarization ratio.
6. Optional experiment: verify Malus's law.
The instruction manual contains experimental configurations, principles, step-by-step instructions, and examples of experiment results. Please click Experiment Theory and Contents to find more information about this apparatus.
|Output Power< 2 mW|
|Center Wavelength: 650 nm|
Power Supply of Semiconductor Laser
|0 ~ 4 VDC (continuously adjustable), resolution 0.01 V|
|Photo Detector||Silicon detector, aperture of light entrance 2 mm|
|Angle Sensor||Measurement range 0 - 180°, resolution 0.1°|
|Polarizer||Aperture 20 mm, rotation angle 0 - 360°, resolution 1°|
|Size 150 mm × 100 mm|
|Voltmeter||Measurement range 0 - 20.00 V, resolution 0.01 V|
Laser Power Meter
|2 µW ~ 2 mW, 4 scales|
|Temperature Controller||Control range: from room temperature to 80 °C, resolution 0.1 °C|
|Laser support and angle sensing device||1 set|
|Support of white screen||1|
|Red connection wire (2 short, 1 long)||3|
|Black connection wire (medium size)||1|
|Black connection wire (large size, 1 short, 1 long)||2|