1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Lasers: Power and wavelength dependence

  1. Jul 5, 2014 #1
    I have a 1550nm diode laser. I have a function generator sending a triangular function into the fast input of the laser; however, if I am within the bandwidth of the laser (under 10kHz), my output power of the laser mimics my fast input signal, so I get a triangular function on my O-scope with the same Vpp (typically 2V) and frequency. I wanted to know if there are any power stabilization techniques which will give me a DC signal on my O-scope.
  2. jcsd
  3. Jul 5, 2014 #2


    User Avatar

    Staff: Mentor

    You are driving the laser diode with an ac drive waveform, and expect a dc output from your photodetector? What am I missing?
  4. Jul 5, 2014 #3


    User Avatar
    Staff Emeritus
    Science Advisor

    Don't use an AC waveform to drive the laser?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Lasers Power wavelength Date
A Decreasing the power density of a laser Jun 3, 2017
I Decreasing Laser power Jun 2, 2017
I Understanding laser power terminology Mar 19, 2017
Laser beam propagation Feb 8, 2016
I How to estimate the power of a laser pointer Aug 14, 2015