Simultaneous optical and electrical heating in dual mode photodiode operation at room temperature

In this work we investigat e an alternative method for thermal detection with the dual mode optical power detector, which combines both thermal and photocurrent detection of optical power in one device. By applying electrical heat and optical heat simultaneously , rather than in two separate steps, a closed loop feedback control can be used to maintain the temperature while opening and closing the laser power shutter Measurements using the new method are compared to the old method, where optical heating was done with an open circuit , with no electrical current The results demonstrate that simultaneous optical and electrical heating of the photodiode during electrical substitution is possible