https://kolarivision.com/product/gopro-7-diy-full-spectrum-conversion-lens/
GoPro 6 and 7 Camera Infrared Conversion
Convert your GoPro 6 or 7 camera to infrared or NDVI and take infrared anywhere with this small rugged camera.
infrared conversiongoprocamera
https://researchr.org/publication/CaiRWSJ20/bibtex
High Conversion Efficiency, Mid-Infrared Pulses Generated via Burst-Mode Fiber Laser Pumped Optical...
high conversionmid infraredfiber laserefficiencypulses