Qixin He, Huifang Liu, Bin Li, Chuantao Zheng, Yiding Wang. Multi-Channel Semiconductor Laser Temperature Control System[J]. Acta Optica Sinica, 2017, 37(11): 1114002
- Acta Optica Sinica
- Vol. 37, Issue 11, 1114002 (2017)
Fig. 1. Structural diagram of multi-channel semiconductor laser temperature controller
Fig. 2. Circuit principle diagram of temperature collection channel 1
Fig. 3. Physical picture of multi-channel semiconductor laser temperature control system
Fig. 4. Temperature control experimental results. (a) LD1; (b) LD2
Fig. 5. Stability test results of laser temperature control. (a) Stability of LD1 at 30 ℃; (b) stability of LD2 at 45 ℃
Fig. 6. Output spectra of lasers with fixed current and various temperatures. (a) LD1; (b) LD2
Fig. 7. Stability test of emitting spectrum of DFB laser. (a) LD1; (b) LD2
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Table 1. Empirical formula of critical proportional band parameter tuning method
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