Pump laser drive stabilization system
A technology for pump lasers and stabilizing systems, which is applied in the field of pump lasers, can solve problems such as limiting long-term work stability, and achieve the effect of compensating work drift
Pending Publication Date: 2021-02-23
华东师范大学重庆研究院 +2
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Problems solved by technology
[0004] At the same time, the stable operation of the pump laser also depends on the working state of the external stable grating. The existing laser driving technology only takes into account the working state of the inner shell of the pump laser, ignoring the working state of the external stable grating and the external environment temperature over time. The interaction between drift and pump laser work can achieve a high degree of stability in short-term operation, but in long-term operation, there are still changes in the working state, which limits the stability of long-term work
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Embodiment 1
[0041] Such as figure 1As shown, a pump laser drive stabilization system, the pump laser 1 contains a laser diode 11, a semiconductor refrigerator 12, a laser detector 13, and a stabilizing grating 14 at the end. The drive stabilization system includes a constant current stabilization system 2, Constant temperature stabilization system 3, power detection system 4, environment detection system 5, control system 6, stable grating temperature resistance 7, system environment temperature resistance 8, external semiconductor refrigerator 9.
[0042] The constant current stabilization system 2 includes a voltage comparison circuit 21 , a constant current drive circuit 22 , a switch protection circuit 23 , the constant current drive circuit 22 , and the switch protection circuit 23 is connected to the laser diode 11 . The voltage comparison circuit 21 includes a first input end, a second input end and an output end, the constant current drive circuit 22 includes an input end and an o...
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The invention discloses a pump laser driving stabilizing system. The driving stabilization system comprises a constant-current stabilization system, a constant-temperature stabilization system, a power detection system, an environment detection system and a control system, wherein the constant-current stabilizing system comprises a voltage comparison circuit, a switch protection circuit and a constant-current driving circuit, and the constant-temperature stabilizing system comprises an internal constant-temperature stabilizing circuit and an external constant-temperature stabilizing circuit. The invention has the following beneficial effects: the built-in algorithm is used to optimize the overall stabilization system of the main body, stable control is carried out on the pump laser from the aspects of hardware circuit and software algorithm, the pump laser is protected from being damaged by overcurrent, overvoltage and static electricity, the resistance of the pump laser to environmental change is improved, and the working stability is enhanced.
Description
technical field [0001] The invention belongs to the technical field of pump lasers, and specifically designs the driving and stabilizing technology of the pump lasers. Background technique [0002] The pump laser is an ideal electro-optical conversion device, widely used in fiber pulse lasers, erbium-doped fiber amplifiers, and ytterbium-doped fiber amplifiers. It has high quantum efficiency and pumping efficiency, and small current and temperature changes will lead to output Large changes in optical power. The pump laser is a typical current-driven device. In practical application, the driving current of the pump laser is required to have extremely low electrical noise and high stability. The instability of the driving current will cause the intensity noise of the laser. , resulting in broadening of the output laser spectral linewidth. Therefore, a highly stable pump driving current is a necessary condition for stable output power. At the same time, as a typical current-...
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Patent Timeline
Login to View More IPC IPC(8): H01S3/131H01S3/0941H01S3/00
CPCH01S3/0014H01S3/0941H01S3/1312H01S5/0683H01S5/06808H01S5/06804H01S5/02415H01S5/02446H01S5/042H01S3/13017H01S3/13013H01S3/09415H01S3/1305
Inventor 曾和平王霄李爽胡梦云
Owner 华东师范大学重庆研究院