Two almost-equal frequencies produce beating: slow envelopes formed by tiny detuning.
i. Narrow detune with long pulse bands.
ii. Diagonal beat envelope with gentle moiré.
iii. Slightly wider detune, quicker alternation.
Two almost-equal frequencies produce beating: slow envelopes formed by tiny detuning.
i. Narrow detune with long pulse bands.
ii. Diagonal beat envelope with gentle moiré.
iii. Slightly wider detune, quicker alternation.