HOME SBOX THOMX MINICAV Utilities
SBOX orders SBOX installation SBOX commissioning SBOX control command
  Status of commissioning, report also here plots are reports.  Not logged in ELOG logo
 List  |  Find  |  Login  |  Help 
Entry   Cleaning of Mirrors, posted by Xinyi Lu at Optical room about lasers and optics 
    Reply   Cleaning of Mirrors, posted by Xinyi Lu at Optical room about lasers and optics optical_room.jpg
       Reply   Cleaning of Mirrors, posted by Xinyi Lu at Optical room about lasers and optics 2nd_measurement_F20606.png7th_measurement__F16563_bad_locking.png
          Reply   Cleaning of Mirrors, posted by Xinyi Lu at Optical room about lasers and optics F_25299.png
Message ID: 187     Entry time: Mon Feb 12 17:17:04 2024     In reply to: 186     Reply to this: 188
 Author: Xinyi Lu 
 Status: Fixed 
 Type: info 
 Category: lasers and optics 
 Location: Optical room 
 Title: Cleaning of Mirrors 

- Today we cleaned the environment and put the spin coater and microscope inside the airflow.
- Tomorrow, Daniele and I will clean the mirrors one by one using pure alcohol and water, and measure the finesse each time. If it does not improve, we will clean them with plasma.

Xinyi Lu wrote:

Today Daniele, Ronic and I cleaned the mirrors and locked the cavity. However, the finesse was only 13,000 because of the not clean enough environment and not pure enough alcohol and water.

We will carefully clean the environment, clean the mirrors again with pure alcohol and water and measure the finesse when I return. If it doesn't work, we will use plasma to clean the mirror. We have gone to the lab to confirm the plasma device and then we will study the best parameter settings: polarity, time, and current.

Have a nice weekend!

 

Attachment 1: optical_room.jpg  123 kB  | Hide | Hide all
optical_room.jpg
ELOG V3.1.4-395e101