GaAs temperature calculation induced by electrical power

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SUMMARY

The discussion centers on calculating the temperature generated in a Gallium Arsenide (GaAs) laser ridge when subjected to an electrical power input of 10V and 100mA. The dimensions of the ridge are specified as 1mm in length, 10µm in width, and 5µm in thickness, with a gold covering for electrical contact. Participants suggest that while precise calculations can be performed using simulation software like COMSOL, a rough manual calculation can also be attempted using thermal resistance and power dissipation formulas.

PREREQUISITES
  • Understanding of thermal resistance concepts
  • Familiarity with GaAs semiconductor properties
  • Basic knowledge of electrical power calculations
  • Experience with COMSOL Multiphysics or similar simulation tools
NEXT STEPS
  • Research thermal resistance calculations for semiconductor devices
  • Learn about GaAs laser operation and thermal management
  • Explore manual calculation methods for power dissipation
  • Investigate COMSOL Multiphysics for thermal simulations in semiconductors
USEFUL FOR

Electrical engineers, semiconductor physicists, and anyone involved in the design and thermal management of GaAs laser devices.

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hello

I have a question.

If 10V and 100mA is injected to GaAs laser ridge size is 1mm(length), 10um(width), 5um(thickness), which temperature can be generated in the ridge?

the ridge is covered by gold for the electrical contact.

Is it possible to calculate?

I tryed to serch the wikipedia but I could't get the nice information.

so... does anybody have any good idea?
 
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Do you have access to Comsol or similar software?
 
yes I have a comsor.

but I want to calculrate roughly... by hands.

thanks your comment.
 

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