- photon detection
- photon detector
- photon diffusion
- photon Doppler velocimetry
- photon-drag photodetector
- photon echo
- photonegative
- photonegative effect
- photon entanglement
- photonephelometer
- photoneutrino
- photoneutrino process
- photoneutrino processes
- photoneutron
- photon fluctuation
- photon flux
- photon gas
- photon gas thermodynamics
- photonic analog-to-digital conversion
- photonic band gap
- photonic bandgap structure
- photonic chemistry
- photonic crystal
- photonic crystal cavity
- photonic crystal fiber