THORLABS GSL Series User Manual page 9

GSL Series Gain-Switched Lasers Chapter 4: Operation
Repetition Rates and Pulse Widths
The GSL series of lasers has four internally triggered repetition rates and two externally triggered settings
accommodating both Hi-Z and 50 Ω impedance. The internally available rates include: 1, 10, 100 and 200 MHz.
Use the included 2.5 mm flathead screwdriver to operate these controls.
All of the GSL series offers controls for varying the pulse width. Use the included 2.5 mm flathead screwdriver to
operate this control also, as shown in Figure 7. The range of pulse widths for each model are listed in the
specifications table in Section 5.1. The pulse width control directly programs the pulse generator and has 16
positions, which allows the pulse width to be adjusted to the settings shown in the table in section 4.5. Plots of
typical pulses and of typical pulse width as a function of control setting are available in the web presentation.
Figure 6 Pulse width and repetition rate controls are adjusted with the included 2.5 mm flathead
screwdriver.
Rev A, July 25, 2023 Page 7