LED
|
LASER DIODE
|
| 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 |
