concave reflection grating
凹面反射光栅

• donor impurity level
• donor molecule
• donor site
• donut
• dopant
• doped glass
• doped single crystal
• doping
• doping accuracy
• doping density
• doping gradient
• Doppler accuracy
• Doppler-broadened laser transition
• Doppler broadening
• Doppler direction finder
• Doppler effect
• Doppler-Fizeau effect
• Doppler-free spectrocopy
• Doppler-free two-photon spectroscopy
• Doppler frequency
• Doppler half-width
• Doppler line shape
• Doppler linewidth
• Doppler profile
• Doppler Q switching