Application of semiconductor laser power supply

Application of semiconductor laser power supply

Semiconductor laser market leading fiber laser, gas laser, solid laser market for a while, and several other categories of laser market proportion is similar. However, since 2016, the market share of semiconductor laser has expanded rapidly, with an annual growth rate of 170%. In 2015 and 2015, semiconductor laser accounted for 50% of the total market share of laser. The market share of semiconductor laser power supply also expanded at the same time. The output of semiconductor laser power supply of Shandong Radium Source Laser Technology Co., Ltd. also increased rapidly, becoming another pillar product of the company after CO2 laser power supply.

Semiconductor laser initial market share is not ahead of other kinds of laser market, the exact reason is because of the damage of the laser. Semiconductor laser is mature earlier, faster progress of a kind of laser, because of its wide wavelength range, simple production, low cost, easy to mass production, and because of small size, light weight, long life, therefore, varieties of rapid development, wide range of applications.

The nature of the semiconductor laser itself determines its surge resistance ability is poor, which requires the stability of the driving power supply is high, the surge impact is small, so the driving power need a variety of protection circuits to meet the actual requirements. Usually use slow start circuit, TVS(transient suppressor) absorption circuit, current limiting circuit, etc., to prevent surge impact and excessive current. However, the working current of high-power semiconductor laser is larger, and the semiconductor laser is relatively fragile, so the traditional slow start circuit and TVS absorption circuit can not meet the actual requirements.

Unlike traditional laser power supplies, which can complete the assembly of all components in a case, semiconductor laser power supplies require more modules to work together. Voltage regulator module, stable current module, optical power detection module, indicator module, main control board and other modules work together, in order to achieve stable and qualified current for semiconductor laser, which is not without the function of protection circuit. The protection circuit includes current limiting circuit, surge absorbing circuit and slow starting circuit. The final realization of constant voltage module output voltage ripple: ±0.5%VO; The output voltage comprehensive adjustment rate: ±0.5%, the output load capacity is strong, 0-5KHz pulse current when the output voltage change does not exceed ±0.5%VO; Constant current module constant current output rising and falling edge is less than 10us; No overshoot, no recoil; Constant current output current ripple is less than ±0.2%; The comprehensive adjustment rate of constant current is less than ±0.5%.

The progress of semiconductor laser power supply technology has promoted the development of semiconductor laser market, and the increment of semiconductor laser market has driven the progress of semiconductor laser power supply technology rapidly. As a result of each other, the semiconductor laser market has a broad prospect, and the semiconductor laser power supply is widely used.