Red Laser DiodeThe most common and technologically advanced laser diodes on the market at the moment are red laser diodes, which are typically made of GaInP or AlGaInP. From cheap laser pointers to laboratory flow cytometry systems, red diode lasers are essential in a wide range of applications.SpecificationsOutput Power: 50mWWorking Voltage: 5V DCOperating current: <30mAHousing material: CopperLaser beam Size: <φ8mm ( @15 m )Working temperature: -10C ~ 40CLaser wavelength: 650nm red-coloredWorking life: more than 2000 hoursSpot mode: Dot Facula (continuous output)Power lead length: 80mmA laser diode is a semiconductor that uses a p-n junction for producing coherent radiation with the same frequency and phase, which is either in the visible or infrared spectrum. It is also called an injection laser diode and the technology is similar to that found in LED. Click LED for more similar products at Robotechbd, Bangladesh. ——————————What is a Laser Diode?A laser diode is a semiconductor that uses a p-n junction for producing coherent radiation with the same frequency and phase, which is either in the visible or infrared spectrum. It is also called an injection laser diode and the technology is similar to that found in LED.How does Laser Diode work?When DC voltage is applied across the laser diode, the free electrons move across the junction region from the n-type material to the p-type material. In this process, some electrons will directly interact with the valence electrons and excite them to a higher energy level whereas some other electrons will recombine with the holes in the p-type semiconductor and releases energy in the form of light. This process of emission is called spontaneous emission.The photons generated due to spontaneous emission will travel through the junction region and stimulate the excited electrons (free electrons). As a result, more photons are released. This process of light or photons emission is called stimulated emission. The light generated due to stimulated emission will move parallel to the junction.The two ends of the laser diode structure are optically reflective. One end is fully reflective whereas another end is partially reflective. The fully reflective end will reflect the light completely whereas the partially reflective end will reflect most part of the light but allows a small amount of light.The light generated in the p-n junction will bounce back and forth (hundreds of times) between the two reflective surfaces. As a result, an enormous optical gain is achieved. The light generated due to the stimulated emission escaped through the partially reflective end of the laser diode to produce a narrow beam of laser light. All the photons generated due to the stimulated emission will travel in the same direction. Therefore, this light will travel long distances without spreading in space.The most familiar and technologically advanced laser diodes on the market at the moment are red laser diodes, which are typically made of GaInP or AlGaInP. From cheap laser pointers to laboratory flow cytometry systems, red diode lasers are essential in a wide range of applications.
