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What is the difference between Lasers and LED's (light emitting diodes)?
Lasers are monochromatic (single color wavelength), collimated (non-divergent) and coherent (wavelengths in- phase) in contrast, LED's are neither coherent nor collimated and generate a broader band of wavelengths (multiple). In addition, a significant difference between the two is the power output. The peak power output of lasers is measured in watts, while that of LED's, is measured in milliwatts. Also, LED's usually have a 50% duty cycle, meaning that they are "on" 50% of the time and "off" 50% of the time regardless of what frequency (pulses per second) setting is used.
There are many light emitting products on the market today, claiming to be lasers that do not meet scientifically defined attributes for being a true laser. For example, products that use Light Emitting Diodes or LEDs as they are more commonly known, do in fact produce light, however the light is not intense, producing very little energy and is non-coherent, similar to light produced by common household light bulbs. Non-coherent or non-culminated light is the result of photons moving in random directions at random times, generating random frequencies. The most common use of LEDs is in electronic equipment, such as cell phones and VCRs, to inform the users that the item is ON. LEDs are cheap and easy to reproduce (Pontinen 1992). Obviously, these devices are NOT lasers. This misconception is in large part a by-product of marketing. Some sales professional use the word "laser" in order to describe a process such as in "laser pointers" which refers more to mankind's collective imagination than scientific comprehension.
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What is the difference between anode led and cathode led?
A: A LED is a diode and like all diode they have an [anode] meaning positive terminal and a [cathode] negative terminal. Therefore the proper potential must be applied for it to behave like an LED.
What does it mean LED?
LED: light emitting diode. It is a diode that emits light when current passes through it
Do diodes other than LED's emmit light?
Yes ,laser diodes actually emmit light . All other diodes serve to block voltage ,or zenner diode to regulate.
What does the electronics term LED stand for?
It actually means Light Emitting Diode. I hoped i helped :)
For what does LED lights stand for?
Light Emitting Diodes
What is the difference between PIN diode and Avalanche Photo diode?
ets see the comparison of LED Diode vs LASER Diode.LED Diode :-Full form of LED- light emitting diode.-LED's are small in size, longer life, reliable and require little power.-Here generation photon by spontaneous emittion.-LED's produce a divergent and incohrent light beam.-Types of LED 1> surface emitter and 2> Edge emitter.-Their response is fast.-A wide range of wavelengths is available.-The cost of LED would be less.-An intensity of generating light is less.-Coupling efficiency of LED with fiber is less.-LED's use with the multimode fibers.-Bandwidth of led is moderate.-In led have require no extra circuit because of its simple circuit.-Here require drive current is 50 to 100mA.LASER Diode :-Full form of LASER - light emplification by stimulated emmition of radiation.-Laser's are bigger in size, longer life, less reliable and require more power then LED.-Here generating photon by stimulated emittion.-Laser produce q monochromatic and coherent light beam.-Types of Laser 1> semiconductor laser and 2> Gas laser.-Their response is faster than LED.-A small range of wavelength is available.-The cost of Laser would be higher.-Coupling efficiency of Laser with fiber is higher.-Laser use with both single mode and multi mode fibers.-Bandwidth of laser is higher.-In laser have require extra circuit for isolation of temperature reaction.-Here require drive current is Therashold current 5 to 40mA.
What do the acronyms 'LASER' and 'LED' stand for?
LED is "light emitting diode". LASER was originally an acronymn which meant "Light Amplification by Stimulated Emission of Radiation". Easy to see why they'd want to shorten that one.
What is laser smoke detector?
This type of smoke detector is more sensitive. It uses a laser diode in the sensor instead of an LED which allows it to be much more sensitive.
What is the different between photo-diode and LED?
A Photo-diode is used to receive light. whereas the L.E.D. is a Light Emitting Diode.
What does LED stand for in LED lights?
Light Emitting Diode - LED
Differences between LED and photodiode?
The Simplest Difference is that LED emits Light, & Photodiode converts Light energy into electrical Energy
What is required to turn a LED into a laser diode?
you can't. they are two different things. however you might be able to focus it to a small point with a lens. It is possible to use an array of hundreds or thousands of high intensity LEDs to pump a dye LASER. But this does not make the LED itself a LASER, just the source of energy for a different type of LASER.
What is the difference between anode led and cathode led?
A: A LED is a diode and like all diode they have an [anode] meaning positive terminal and a [cathode] negative terminal. Therefore the proper potential must be applied for it to behave like an LED.
Is pin diode and led diode are same?
no
What is the differences between light emitting diode and a photodiode?
A light-emitting diode (LED) emits light when an electric current passes through it. A photodiode, on the other hand, generates an electric current when exposed to light. In summary, an LED produces light, while a photodiode detects light.
Difference between light emitting diode and laser?
LEDs, known as light emitting diodes, are comprised of two lead semiconductor light sources. Laser transmitters, also known as laser diodes are comprised of an electrically charged semiconductor laser.
What type of electronic component is an led?
It is considered a diode, a Light Emitting Diode (LED).
