DAI Qin, SONG Wen-wu, WANG Xi-jun. Design and stability analysis of high frequency LD's driving circuit[J]. Optics and precision engineering, 2006, 14(5): 745-748.
DAI Qin, SONG Wen-wu, WANG Xi-jun. Design and stability analysis of high frequency LD's driving circuit[J]. Optics and precision engineering, 2006, 14(5): 745-748.DOI:
On the basis of analyzing the main factors effecting on the LD stability
a 1 kHz repeating frequency LD driving power supply with real-time feedback
closed-loop control and pulse current stabilization was designed. By restraining the surge and the ripple
adopting the delay-time and soft-startup circuit
this system improves the security of both the LD component and power supply. With the thermo-electronic cooler and PC that can detect the circuit real-time
the temperature of the LD can be kept accurately. Primarily
the LD laser output power is 150 W
the stability of the constant temperature power is 0.2 ℃
and the laser line width is about 6 GHz in the experiment.