Three Dimensional Thermal Modeling of Laser Diode Stack
The aim of the study is to analyze the influence of heat load and structural parameters on junction temperature, temperature profiling and thermal resistance of laser diode stack. To know optimal structural parameters and temperature profiling, three dimensional steady and transient state thermal modeling of laser diode stack using Comsol software is carried out. The effect of pulse duration, heat load, submount height and thickness variation were studied to know the distribution of temperature along the whole structure of laser diode stack. Modeling study make it possible to design and select out the optimal values of structural parameters corresponding to the minimum thermal resistance of the structure. Results showed that the most important parameter of whole structure is thickness of CuW submount.
KeywordsThree dimensional thermal modeling Laser diode stack Thermal resistance
The authors are grateful to Director SSPL for his permission to carry out this work for publication. Authors are also thankful to Mr. Subodh Chandra and other members of laser group at SSPL for various technical discussions regarding this research work.
- 2.S. Adlivankin, V.V. Bezotosnyi, N.V. Markova, G.T. Mikaelyan, YuM Popov, S.N. Porezanov, Radiative characteristics of two-dimensional arrays of AlGaAs/GaAs diode lasers emitting at the wavelength 0.81 μm and intended to pump solid-state active elements. Quantum Electron. 26(11), 949–951 (1996)ADSCrossRefGoogle Scholar
- 6.www.comsol.com for comsol multi physics software