|LED is termed as Light Emitting Diode
|LASER Diode is also known as Light “Amplification by Stimulated Emission of Radiation”
|Its driving current ranges from 50mA to 100mA
|Its driving current ranges from 5mA to 40mA
|Nature of emitting light is incoherent and consists of various colors
|Nature of emitting light is coherent and monochromatic.
|It has wide junction area during manufacturing
|It has narrow junction area during manufacturing
|Bandwidth lies in the range of 10 THz to 50 THz
|Bandwidth lies in the range of 1MHz to 2MHz
|Power to light conversion efficiency is approximately 20%
|Power to light conversion efficiency is approximately 70%
|Numerical aperture of the obtained light beam in LEDs is high.
|Numerical aperture of the obtained light beam in LASER is extremely low as compare to LEDs.
|It works on Electro-luminance principle
|It works on Stimulated Emission principle
|The LED is considered as the optical source for various crucial applications.
|Laser diode is a semiconductor device which is similar to a light emitting diode (LED) as it directly converts electrical energy to light energy