LFL1900 Thulium doped Fiber Laser

April 27, 2023 • 3 min read

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Thorlabs Fiber Laser

This Thorlabs Fiber Laser can be controlled via serial communication.

Prerequisite

Please install the PySerial package by running the following command:

pip install pyserial

You will also need to install drivers from Thorlabs.

Example

Below we show an example code to communicate with the fiber laser.

import time
from tllfl import TLLFL


def main():
    port = "COM3"  # Replace with the appropriate COM port for your Thorlabs Fiber Laser
    laser = TLLFL(port)

    # Set laser current and enable the laser
    laser_current = 200
    laser.set_current(laser_current)
    print(f"Set laser current to {laser_current} mA")

    laser.set_enable(1)
    print("Laser enabled")

    # Wait for 5 seconds
    time.sleep(5)

    # Get actual temperature, current, and power
    actual_temp = laser.get_actual_temp()
    print(f"Actual temperature: {actual_temp} °C")

    current = laser.get_current()
    print(f"Current: {current} mA")

    power = laser.get_power()
    print(f"Power: {power} mW")

    # Disable the laser
    laser.set_enable(0)
    print("Laser disabled")

    # Close the serial connection
    laser.close()

if __name__ == "__main__":
    main()

This example code does the following:

Imports the necessary modules and the Laser class from the tllfl.py file provided.
Defines a main function that:

Assumes you have your Thorlabs Fiber Laser connected to a serial port.

Sets the laser current.
Enables the laser.
Waits for 5 seconds, and then gets the actual temperature, current, and power.
Disables the laser.
Closes the serial connection.

Make sure to replace the port variable with the appropriate COM port for your Thorlabs Fiber Laser.