https://github.com/zmitchell/mhz_utilities

A collection of utilities for interacting with our time-resolved circular dichroism spectrometer
https://github.com/zmitchell/mhz_utilities

automation lasers physics python serial

Last synced: 18 days ago
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A collection of utilities for interacting with our time-resolved circular dichroism spectrometer

• Host: GitHub
• URL: https://github.com/zmitchell/mhz_utilities
• Owner: zmitchell
• License: apache-2.0
• Created: 2018-11-21T20:49:28.000Z (about 6 years ago)
• Default Branch: master
• Last Pushed: 2018-11-21T21:10:25.000Z (about 6 years ago)
• Last Synced: 2024-11-10T07:24:05.714Z (3 months ago)
• Topics: automation, lasers, physics, python, serial
• Language: Python
• Size: 19.5 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE-APACHE

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README

        
# MHz Utilities

This is a collection of small utilities for interacting with the various pieces of equipment in the MHz system (a time-resolved circular dichroism spectrometer).

Everything is currently written in Python, but I suspect most things will be rewritten in Rust for robustness and ease of packaging/deployment.

## Contents

The `equipment` package contains classes for communicating with different pieces of equipment. This is the list so far:

* `pem.py`: A Hinds photoelastic modulator, used to modulate intensity or polarization depending on the optical elements surrounding it.

* `zaber_stepper.py`: A Zaber translation stage in the Ti:Sapph oscillator. When used with a slit, this allows you to tune the wavelength of the oscillator.

* `lia.py`: A Stanford Research Systems SR865A lock-in amplifier. This is crucial to most experiments done with this system.

* `pump.py`: A Spectra-Physics Millenia eV 5W pump laser. This is mostly here so that I can start warming up the laser before I get to work :)

The `scripts` directory contains some scripts for very specific purposes:

* `stepper_move.py`: Allows you to move the Zaber translation stage to an absolute position given in steps of the stepper motor. If you have a file calibrating a wavelength to a position, you can specify the desired wavelength and the script will roughly interpolate the position.

* `stepper_position.py`: This just reads the position of the Zaber translation stage at a single point.

* `stepper_stream_position.py`: This constantly polls the position of the translation stage so that you can move it by hand and see the position without needing to execute another script.

* `scan_steady_state_cd.py`: This coordinates the PEM, LIA, and stepper motor to collect a CD spectrum over a range of wavelengths.

## License

Licensed under either of

 * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)

 * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)

at your option.

### Contribution

Unless you explicitly state otherwise, any contribution intentionally

submitted for inclusion in the work by you, as defined in the Apache-2.0

license, shall be dual licensed as above, without any additional terms or

conditions.