I intend to build a tachometer, which is capable of detecting rotations up to 1kHz (60 000 RPM). From the Internet I know that this is possible to do with a magnet and a Hall detector. However, I would prefer a non-invasive solution with a light and a photo-detector, but from Internet it seems that ordinary low-cost photo-diodes are just too slow for such a task (700 RPM in this video https://www.youtube.com/watch?v=WG_4iChrvR4).
I assume that I would need a photo detecting device, which response time is at least an order of magnitude lower than the period of the oscillation, that is less than 100 micro-s. Are there any photo-detectors (photo-diodes) capable of that? If possible, please suggest a product.