NAOJ GW Elog Logbook 3.2
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YuhangZhao - 00:04, Friday 03 November 2017 (582)
Measurement of Transfer Function for High Voltage Driver
We suspect the wired behavior of SHG's mechanical Transfer Function(TF) is caused by High Voltage Driver(HVD). So we decide to measure the TF of HVD.
We measured two HVDs. One is HVD used for SHG, the other is a new SHG. Each trace data is taken with two different frequency spans and overlapped. This is to make measurement precise.
As you can see from below, the TF of HVD truly has feature like low-pass.
We measured two HVDs. One is HVD used for SHG, the other is a new SHG. Each trace data is taken with two different frequency spans and overlapped. This is to make measurement precise.
As you can see from below, the TF of HVD truly has feature like low-pass.
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Additional information:
The High voltage driver (first picture) is from Matsusada Precision (PZJ-0.15P-LVS2) and the datasheet can be found at the following link: https://www.matsusada.com/pdf/pzj.pdf
The piezo used for the SHG cavity (first measurement) is from Piezomechanik GmbH (HPCh 150/15-8/3) and has a capacity of 790nF.
The piezo used for the IR mode cleaner (second measurement) is from PI (P-025.20H PICA) and has a capacity of 430nF.
The High voltage driver (first picture) is from Matsusada Precision (PZJ-0.15P-LVS2) and the datasheet can be found at the following link: https://www.matsusada.com/pdf/pzj.pdf
The piezo used for the SHG cavity (first measurement) is from Piezomechanik GmbH (HPCh 150/15-8/3) and has a capacity of 790nF.
The piezo used for the IR mode cleaner (second measurement) is from PI (P-025.20H PICA) and has a capacity of 430nF.
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