High power infrared transmitter diode, as a key component in the field of infrared communication and sensing, has been widely used in various fields such as industrial automation, medical treatment, and military applications. This article will introduce the basic concepts, development status, and application prospects of high power infrared transmitter diodes, aiming to provide a comprehensive understanding of this technology.

Basic Concepts of High Power Infrared Transmitter Diode

High power infrared transmitter diode, also known as infrared LED, is a semiconductor device that emits infrared light when forward biased. It is mainly composed of a p-n junction, which is formed by a p-type semiconductor and an n-type semiconductor. When a forward voltage is applied to the diode, electrons and holes are injected into the depletion region, and recombination occurs in the depletion region, emitting infrared light. The main parameters of high power infrared transmitter diodes include: 1. Emission wavelength: The emission wavelength of high power infrared transmitter diodes is generally in the range of 780nm to 3μm, covering the near-infrared, mid-infrared, and far-infrared bands. 2. Forward voltage: The forward voltage of high power infrared transmitter diodes is generally in the range of 1.5V to 3V, depending on the material and structure. 3. Emission intensity: The emission intensity of high power infrared transmitter diodes is an important parameter to measure the performance of the device. It is usually expressed in units of mW or μW. 4. Beam divergence: Beam divergence is a measure of the divergence of the emitted light beam. It is an important parameter for the design of optical systems.

Development Status of High Power Infrared Transmitter Diode

1. Material development: The development of high power infrared transmitter diodes is closely related to the development of semiconductor materials. Currently, gallium arsenide (GaAs), gallium nitride (GaN), and other materials are commonly used in high power infrared transmitter diodes. Among them, GaN-based infrared transmitter diodes have higher power density and better thermal performance, and are gradually replacing GaAs-based infrared transmitter diodes. 2. Structure optimization: The structure of high power infrared transmitter diodes has undergone continuous optimization. For example, the development of surface emitting diodes (SEDs) and vertical cavity surface emitting lasers (VCSELs) has greatly improved the output power and beam quality of infrared transmitter diodes. 3. Packaging technology: The packaging technology of high power infrared transmitter diodes has also made great progress. The development of flip-chip packaging technology has greatly improved the heat dissipation performance of the device, and the application of high-power modules has further improved the output power and reliability of the system.

Application Prospects of High Power Infrared Transmitter Diode

1. Industrial automation: High power infrared transmitter diodes are widely used in industrial automation fields such as machine vision, non-contact measurement, and infrared communication. They can realize the transmission and reception of infrared signals in industrial environments, and play an important role in improving the accuracy and efficiency of industrial production. 2. Medical treatment: In the field of medical treatment, high power infrared transmitter diodes can be used for non-invasive treatment, such as photodynamic therapy and infrared thermal therapy. Infrared light can penetrate the skin and target the specific tissue, achieving a good therapeutic effect. 3. Military applications: High power infrared transmitter diodes have important applications in military fields such as target recognition, infrared communication, and infrared countermeasures. They can provide effective support for military operations and improve the combat effectiveness of troops. 4. Consumer electronics: High power infrared transmitter diodes are also widely used in consumer electronics fields such as remote control, infrared communication, and infrared night vision. They can provide users with more convenient and comfortable experiences. In conclusion, high power infrared transmitter diodes have broad application prospects in various fields. With the continuous development of technology, the performance and application range of high power infrared transmitter diodes will be further expanded, and they will play a more important role in the future.