GaAs temperature calculation induced by electrical power

AI Thread Summary
To estimate the temperature generated in a GaAs laser ridge with specified dimensions and electrical input, one can use basic thermal calculations involving power dissipation. The power injected is 1W (10V x 0.1A), and the heat generated will depend on the thermal conductivity of GaAs and the heat dissipation characteristics of the gold contact. While precise calculations typically require software like COMSOL, a rough estimate can be made using the formula for heat transfer and considering the ridge's geometry. Factors such as ambient temperature and cooling conditions will also influence the final temperature. A more detailed analysis may be necessary for accurate results, but basic calculations can provide a preliminary understanding.
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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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