Introduction
An Optical Lever is a means used to measure small angular deflections off a reflective surface by the displacement of a laser beam projected on a distant screen. Its particular sensitivity is increased by the "factor of 2" and the ability to move the screen "far away". In this project, experiments were conducted to indirectly measure the pitch of an adjusting screw on two types of mirror mounts by an optical lever technique.
Experiments Table
|
|
Mirror Mount
|
θ (rad)
|
Displacement Arm
|
|
#1
|
A
|
~π/4
|
L
|
|
#2
|
A
|
~π/4
|
L
|
|
#3
|
B
|
0
|
S
|
|
#4
|
A
|
~π/4
|
L
|
|
#5
|
A
|
0
|
S
|
|