YuhangZhao - 20:23, Tuesday 13 March 2018 (696)
Measurement of decay time
Participants: Yuhang, Eleonora, Yuefan, Tomura
Today, We try to use a way to measure the decay time of our filter cavity. The way is to cut the incident laser mechanically. By taking the data of oscilloscope, I used this function to fit
y=np.exp(-t/a1)+np.exp(-t/a2)
The reason I use this function is we have two decay mechanisms. One is mechanical cutting, the other is cavity decaying. The fitting result is a1=0.000326, a2=0.0025. This means the cutting time is 0.000326s and cavity decay is 0.0025s.(See attached Fig 1)
Today, We try to use a way to measure the decay time of our filter cavity. The way is to cut the incident laser mechanically. By taking the data of oscilloscope, I used this function to fit
y=np.exp(-t/a1)+np.exp(-t/a2)
The reason I use this function is we have two decay mechanisms. One is mechanical cutting, the other is cavity decaying. The fitting result is a1=0.000326, a2=0.0025. This means the cutting time is 0.000326s and cavity decay is 0.0025s.(See attached Fig 1)
Images attached to this report
