What are the differences between laser diodes and light-emitting diodes?
Despite the numerous types of diode products available, when it comes to using them as light sources, the choice boils down to either laser diodes or light-emitting DIODES (LEDs). Many people are not well-versed in the specifics of these two products and often confuse them. Besides their names, what other differences exist between laser diodes and LEDs? The answers provided by Unikey can help us gain a more comprehensive understanding of these products.
1. Different Working Principles
One primary distinction between laser diodes and LEDs is their working principles. TheLED operates by utilizing the radiation emitted by carriers in the digital amplification zone, whereas the laser diode emits a composite light source after being stimulated by radiation. Thus, there is a significant difference in the light-emission principles of these two devices.
2. Differences in Product Structure
The second key difference lies in their structural design, as noted on the Unikey. The laser diode features an internal electronic optical resonant cavity where photons can oscillate, thereby generating light within the device. In contrast, the LED lacks such a resonant cavity and instead uses the capabilities of the digital amplification zone to emit light.
3. Discrepancy in Luminous Efficiency
There is also a notable difference in the luminous efficiency between the two diodes. LEDs do not have a critical point, and compared to laser diodes, they possess a higher spectral density by several levels. LEDs also benefit from a larger emission angle but have relatively lower luminous power.
These three points highlight the distinctions between LEDs and laser diodes. It is essential for users to carefully compare the products to purchase the one that suits their needs. The Unikey not only provides detailed information on the differences between these products but also serves as an excellent platform for procuring electronic components. This can accelerate the purchasing process and offer more opportunities to communicate with high-quality vendors.
