Buying or Making Infrared LEDs with Wavelengths Between 7 and 10 Microns: A Comprehensive Guide

Developments in technology have led to the emergence of infrared LEDs (Infrared Light Emitting Diodes) with wavelengths spanning between 7 to 10 microns, an area that is highly specialized and intriguing for various applications. These LEDs are not readily available in standard electronic component stores, and therefore, require specialized expertise and equipment. This guide will delve into the accessibility, fabrication, and alternative approaches for acquiring or creating these unique infrared LEDs.

Commercial Availability

While commercially available infrared LEDs and laser diodes in the 7 to 10 micron wavelength range might be rare, they do exist. Specialized manufacturers and suppliers are the primary sources for these components. Companies such as Thorlabs, Hamamatsu, and Opto Diode are known for their extensive product lines, including infrared and photonics components. These suppliers may offer a range of products suitable for the 7 to 10 micron wavelength spectrum.

Laser Diodes as an Alternative

It is important to note that laser diodes are often more efficient and easier to find than traditional infrared LEDs. These devices can operate with similar wavelengths and exhibit improved performance characteristics. Manufacturers such as Thorlabs and Hamamatsu also offer laser diodes that can meet the 7 to 10 micron range, making them a viable alternative for various applications.

DIY Options

For those interested in a do-it-yourself (DIY) approach, a thorough understanding of materials and fabrication processes is crucial. The fabrication of infrared LEDs between 7 to 10 microns typically requires advanced materials such as Indium Gallium Arsenide (InGaAs) and other semiconductor compounds. These materials can produce light in the desired infrared spectrum.

The challenge of fabricating such devices lies in the specialized equipment and processes. Doping and crystal growth techniques are necessary to ensure the production of reliable and efficient infrared LEDs. These processes are not feasible for typical DIY enthusiasts and typically require access to a semiconductor fabrication lab. Therefore, unless you have the necessary resources and equipment, it is advisable to consider purchasing from specialized suppliers.

Alternative Approaches

If a DIY solution is preferred and you are open to alternatives, consider using a suitable infrared laser and modulating it as needed. This approach provides flexibility and can be tailored to specific requirements, offering a practical workaround for those who cannot produce infrared LEDs through traditional methods.

Applications

Infrared LEDs with wavelengths between 7 to 10 microns find application in areas such as gas detection, thermal imaging, and spectroscopy. Therefore, if you have a specific application in mind, it can guide your choice in sourcing or creating these devices. The flexibility and precision offered by these LEDs make them invaluable in these fields.

Conclusion

While it is feasible to obtain or create infrared LEDs with wavelengths between 7 to 10 microns, the practicality of purchasing them from specialized suppliers is often more advantageous. The process of fabricating these devices requires advanced facilities and expertise, and DIY approaches are often limited in scope and reliability.

Ultimately, the choice between buying or making these infrared LEDs depends on your specific needs and the resources available to you. For those with advanced capabilities and a particular interest in the technology, fabricating these devices can be an exciting and rewarding endeavor. However, for the majority, sourcing from specialized suppliers remains the most practical and efficient option.