Agaalas laser diode has a 500 um cavity length which has an effective absorption coefficient of 10 cm1. for uncoated facets the reflectivity are 0.32 at each end. what is the optical gain at the lasing threshold? (the optical field confinement factor г is equal to 1) if the internal quantum efficiency is 0.65, what is the external quantum efficiency?

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz. what wavelength is produced?

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

Due sun 06/09/2019 11: 59 pm skip navigation questions correct q 1 [1/1] correct q 2 [1/1] correct q 3 [1/1] untried q 4 (0/1) untried q 5 (0/1) untried q 6 (0/1) untried q 7 (0/1) untried q 8 (0/1) untried q 9 (0/1) untried q 10 (0/1) grade: 3/10 print version start of questions two cyclists, 42 miles apart, start riding toward each other at the same time. one cycles 2 times as fast as the other. if they meet 2 hours later, what is the speed (in mi/h) of the faster cyclist?