Infrared and Laser Engineering, Volume. 53, Issue 4, 20230713(2024)
High-precision temperature control system design for laser diode
Figures & Tables(17)
Fig. 1. The overall architecture of the digital-analog hybrid temperature control system
Fig. 4. Iterative and multi-objective optimization implementation methods
Fig. 5. Accuracy of the variable zero point temperature control method at different iterations
Fig. 8. (a) Overall physical diagram of the overall architecture of the temperature control system; (b) Schematic diagram of a LD package; (c) Schematic diagram of the integrated device inside the LD package
Fig. 10. Temperature control system temperature control function test
Fig. 12. The architecture of the level-2 TEC temperature control system
Fig. 13. (a) Turn on LD stability testing; (b) Local enlargement of stability test results
Table 1. Common temperature sensor performance
View tableView in ArticleTable 1. Common temperature sensor performance
Sensor type Size Sensitivity Linearity Self-heating Note: The number of "+" indicates the degree of strength of the item, while the number of "-" indicates the degree of weakness. Thermistor ++ ++ -- ++ RTD + -- + - TMP102 - + ++ + AD592 - - ++ +
Table 2. Summary of passive heat dissipation power under different set temperatures
View tableView in ArticleTable 2. Summary of passive heat dissipation power under different set temperatures
Tset/℃ ${T_H} - {T_C}$ ${Q_{passive}}$ −45 82 761.47 −25 62 580.69 −5 42 397.06 0 37 350.66 15 22 310.11 25 12 115.22 35 18 171.89 55 38 367.09 75 58 567.27
Table 3. Temperature control function test results
View tableView in ArticleTable 3. Temperature control function test results
T/℃ Zero/℃ Control type Accuracy/℃ Stable* time/s Over- shoot Note: *The stabilization time is defined as the total time from the start of temperature control until the temperature stabilizes at the required accuracy 30 - Heat 0.0202 30 1.5% 25 29 Heat 0.0197 27 0.5% 20 - Cool 0.0197 28 1.4%
Table 4. Accuracy testing and comparison with single zero point accuracy
View tableView in ArticleTable 4. Accuracy testing and comparison with single zero point accuracy
T/℃ Zero/℃ Accuracy/℃ Mean/℃ Std/℃ Fixed zero accuracy/℃ −45 −33 0.0212 −44.9992 0.0219 0.1951 −25 0.0217 −25.0009 0.0228 0.0629 −15 −12 0.0206 −14.99987 0.0221 0.0409 −5 0.0212 −4.9991 0.0217 0.0295 5 8 0.0194 4.9981 0.0213 0.0238 15 0.0213 14.9997 0.0221 0.0216 25 29 0.0191 25.0013 0.0112 0.0220 30 0.0196 30.0017 0.0140 0.0230 35 0.0206 35.0005 0.0134 0.0246 45 49 0.0195 45.0001 0.0117 0.0296 55 0.0208 54.9985 0.0235 0.0376 65 70 0.0195 65.0000 0.0124 0.0495 75 0.0207 74.9991 0.0239 0.0663
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Mao Ye, Ensi Du, Qiuwei Wang, Yiqiang Zhao. High-precision temperature control system design for laser diode[J]. Infrared and Laser Engineering, 2024, 53(4): 20230713
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Received: Dec. 21, 2023
Accepted: --
Published Online: Jun. 21, 2024
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