LED and Laser diode Characteristics Apparatus
Product Code : JA-PLE-7969
The LED and Laser diode Characteristics Apparatus (SKU JA-PLE-7969) is a semiconductor physics experiment for plotting the electrical characteristics of light-emitting diodes and a laser diode. With this LED and laser diode characteristics apparatus, students forward-bias the LEDs, vary the applied voltage and record the current, then vary the voltage across the laser diode and measure its output, tabulating and plotting both sets of readings. It suits B.Sc physics, electronics and engineering physics practicals on p-n junction light sources.
Specifications
The listing defines the apparatus by its two experiments rather than by component ratings: LEDs in a forward-bias arrangement and a laser diode, each with a variable applied voltage and measurement of the resulting current or output; meter ranges and LED types are confirmed on the quotation.
| Product | LED and Laser diode Characteristics Apparatus |
| SKU | JA-PLE-7969 |
| Devices studied | Light-emitting diodes (LEDs) and a laser diode |
| LED experiment | Forward-bias arrangement; applied voltage varied and corresponding current measured |
| Laser diode experiment | Applied voltage varied and corresponding output measured |
| Results | Tabulated and plotted as characteristic curves |
Experiments with the LED and laser diode characteristics apparatus
The apparatus shows that an LED, like any p-n junction diode, conducts easily only in forward bias, and lets students compare its current-voltage curve with the way a laser diode's output changes as its applied voltage is raised.
- Plotting the forward-bias V-I characteristic of LEDs
- Relating the turn-on voltage of an LED to the band gap of its semiconductor
- Measuring the output of a laser diode as the applied voltage is varied and plotting its characteristic
- Semiconductor device practicals in B.Sc physics, electronics and engineering courses
Scope of supply and ordering
The listing covers the LED and laser diode characteristics apparatus for the two experiments described above. LED types, meters, power supply, accessories, spares and quantities are confirmed on the quotation.
Minimum order quantity, lead time and packing are confirmed on each quotation according to the number of sets and the delivery destination. JaincoLab supplies semiconductor experiment kits to college physics and electronics laboratories and education projects, and exports to buyers in Africa, the Middle East and South and South-East Asia.
Frequently asked questions
What does the apparatus measure?
It records the current through forward-biased LEDs as the applied voltage is varied, and the output of a laser diode as its applied voltage is varied.
How are the results used?
The readings are tabulated and plotted on a graph to give the characteristic curves of the LED and the laser diode.
Why does an LED emit light?
When an electron meets a hole at the p-n junction it falls to a lower energy level and releases the energy as a photon; the wavelength depends on the band gap of the junction materials.
Related products
More semiconductor and modern physics kits are listed in Physics Lab Equipments from JaincoLab, a physics lab equipment manufacturer in India.
Request a quote
To order the LED and Laser diode Characteristics Apparatus, send the quantity and delivery destination through the JaincoLab contact page or email [email protected]. Tender and project enquiries can be sent through the tenders page.
