Current status of scattering measurement

Abe, Dan, Ikeda

We changed IR laser and the camera which can receive IR light for IR measurement.
2days ago, we take picture of Aztec3 sample and we can see 4 scattering lights.

The light on the most right is front surface scattering.
The light seen third from the right is back surface scattering.
The light seen forth from the right(most left) is back reflection light.
About second one, we are discussing.

Yesterday, we installed beam profiler in clean room and measured new laser.
The result is like this.

The beam size is large. We will put some collimator lens.