Related Experiment Video
Updated: Jun 22, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
Published on: January 28, 2019
Amplitude and phase noise sensitivity of modelocked Ti:sapphire lasers in terms of a complex noise transfer function
Abstract:
The amplitude and envelope phase noise of a modelocked laser are shown to depend directly on the pump laser amplitude stability. We characterize the sensitivity of this process by a noise transfer function which represents the complex amplitude-to-amplitude modulation (AM-AM) and amplitude-to-phase modulation (AM-PM) conversion gain of the pump-induced amplitude and phase noise, respectively. We find that a linearized laser model extrapolated from relaxation oscillation theory, combined with a thermal model, adequately describe the principal features of the response from <1 Hz to 10 MHz.
Related Concept Videos
Frequency Response of a Circuit
The transfer function is pivotal in characterizing how these circuits react to various frequencies, facilitating a profound understanding of their behavior. An essential parameter is the time constant, signifying the...
Network Function of a Circuit
Transfer function and Bode Plots-II
Gain
Gain:
Suppose Vin is the input and Vout is the output signal to a circuit.
Transfer Function in Control Systems
To derive the transfer function, consider a general nth-order linear time-invariant...
Time and frequency -Domain Interpretation of Phase-lag Control
Phase-lag controllers do not place a pole at zero, but instead influence the steady-state error by amplifying any finite,...
