Large-Signal RF Circuit Model for a High-Power Laser Diode Module

Journal article

Publication Details

Author(s): Engelbrecht R, Groh J, Stumpf C, Adametz J, Schmauß B
Journal: IEEE Photonics Technology Letters
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Publication year: 2014
Volume: 26
Journal issue: 8
Pages range: 761-764
ISSN: 1041-1135


An electrical large-signal circuit model for a 30-W high-power laser diode module is presented. Such modules are designed primarily for continuous wave (cw) operation but can be pulsed in the sub-\mu{\rm s} temporal range for special applications. Our model is thus valid up to 20 MHz in the electrical frequency domain. The elements of the circuit model have been derived from RF impedance measurements using a calibrated vector network analyzer and a high-current dc/RF bias-T. The impedance is dominated by the inductance of the high-current connecting leads from the laser driver to the laser chip. The skin effect has been found to influence considerably both resistive and inductive impedances at high frequencies. For large-signal circuit simulations in the time domain, the current-voltage characteristic of the diode p-n junction is included by an analytic equation. The model is verified by comparison of simulation results with measured currents, voltages, and laser powers in large-signal pulsed-mode operation. This model is well suited for the design of optimized pulsed-current driver circuits. © 1989-2012 IEEE.

FAU Authors / FAU Editors

Adametz, Julian
Lehrstuhl für Hochfrequenztechnik
Engelbrecht, Rainer PD Dr.
Lehrstuhl für Hochfrequenztechnik
Groh, Jannis
Lehrstuhl für Hochfrequenztechnik
Schmauß, Bernhard Prof. Dr.-Ing.
Professur für Hochfrequenztechnik mit dem Schwerpunkt Optische Hochfrequenztechnik und Photonik
Stumpf, Christopher
Lehrstuhl für Hochfrequenztechnik

How to cite

Engelbrecht, R., Groh, J., Stumpf, C., Adametz, J., & Schmauß, B. (2014). Large-Signal RF Circuit Model for a High-Power Laser Diode Module. IEEE Photonics Technology Letters, 26(8), 761-764.

Engelbrecht, Rainer, et al. "Large-Signal RF Circuit Model for a High-Power Laser Diode Module." IEEE Photonics Technology Letters 26.8 (2014): 761-764.


Last updated on 2018-10-08 at 23:59