Hello,
I’m currently working on a project that requires LEDs with wavelengths of 1400nm, 1900nm, and 2200nm, along with corresponding sensors. I’ve checked SparkFun’s offerings, but I only found LEDs with a 950nm wavelength.
Could anyone recommend where I might be able to find these specific LEDs and sensors, or if SparkFun might carry them in the future?
Thanks in advance for your help!
Best regards,
Adnan
A few seconds spent with Mr. Google turned up this manufacturer.
LEDs are also photodiodes, with peak sensitivity to wavelengths somewhat shorter (typically 20-50 nm for the visible range) than their emission wavelengths.
Obviously, these are custom parts and will probably be quite expensive.
Consider other options for generating the wavelengths required by your project, such as an incandescent light bulb and and a diffraction grating. Cheaper, and more flexible as well.