LIAO Yi-ru, GUAN Bao-lu, LI Jian-jun etc. Thermal Characteristics of The Low Threshold 852 nm Semiconductor Lasers[J]. Chinese Journal of Luminescence, 2017,38(3): 331-337
LIAO Yi-ru, GUAN Bao-lu, LI Jian-jun etc. Thermal Characteristics of The Low Threshold 852 nm Semiconductor Lasers[J]. Chinese Journal of Luminescence, 2017,38(3): 331-337 DOI: 10.3788/fgxb20173803.0331.
Thermal Characteristics of The Low Threshold 852 nm Semiconductor Lasers
852 nm semiconductor laser was manufactured by metal organic chemical vapor deposition (MOCVD) and semiconductor subsequent technology. The threshold current of this laser was 57.5 mA
output spectral line width was less than 1 nm at room temperature. The impact of temperature on output optical power
threshold current
voltage
output centre wavelength was analyzed. When the temperature changes from 293 to 328 K
the characteristic temperature is 142.25 K
and the rates of the threshold current change and output light power are 0.447 mA/K and 0.63 mW/K
respectively. Ideal factor
n
is calculated to be 2.11
while the laser thermal resistance is calculated to be 77.7 K/W. The calculated center wavelength drift rate is 0.249 29 nm/K
corresponding well to the measured value in the experiment. Experimental results demonstrate that the relevant parameters of this laser are stable with the temperature ranging from 293 to 303 K. However
a temperature device is needed if a higher working temperature is required.
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references
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