In a laser structure, the existence of standing waves is possible at frequencies for which the distance between the mirrors is an integral number of ________
A. λ / 2
B. λ / 4
C. λ / 6
D. λ / 8
Answer:A
In a laser structure, the existence of standing waves is possible at frequencies for which the distance between the mirrors is an integral number of ________
A. λ / 2 B. λ / 4 C. λ / 6 D. λ / 8