The market prospect of green laser pointer should be analyzed

The market prospect of green laser pointer should be analyzed.
Cleavage plane in the forward over-current transient over voltages generated by the optical power can damage even in a few nanoseconds of time exceed the maximum allowable current of the semiconductor laser, will make destruction and damage. Produce surge causes and preventive measures: a laser diode driver no slow start, on and off circuit, finishing Optoelectronic Equipment Co., Ltd. to collect data from Shaanxi in the circuit the formation of a transitional process, ie turned on, the drive power to the magnitude of the overshoot, stabilized subsequently over-process. current overshoot of this drive easy to make the PN junction was electrical breakdown, damage or destruction of the cleavage plane was light even if the surge intensity or duration will not the first time you open the power to make lasers produce complete failure. It is enhancing the process of green laser pointer .
But also in the number of surges under the impact of accelerated semiconductor laser performance degradation and final failure. Therefore, the semiconductor laser drive power should adopt measures to slow start. Semiconductor laser tube socket by welding, but directly into the socket in order to facilitate the replacement of the tube sockets and socket of poor contact will cause the pass off arising from contact with the process of voltage surge. To do this, make sure that the semiconductor laser tube have a good and reliable electrical contact. the slow start circuit of the semiconductor laser and semiconductor laser capacitor capacitance excessive or capacitance charging voltage is too high, then turn off the power when the capacitor discharges can cause semiconductor laser over-current, so that the PN junction breakdown occurred cleavage plane is damaged. The sales situation of green laser pointer should be recorded.
The string into the drive circuit and the external circuit of the semiconductor laser drive circuit associated surge, resulting in laser breakdown should not be a laser diode driver circuit associated with the start frequently contain large capacitive or inductive load line between in order to pro forma surge noise filter to isolate some users required use of semiconductor laser frequency and or need to use the potentiometer to adjust the laser drive current and output power, if the potentiometer sliding contact in the sliding process, mechanical or dust caused by poor contact will lead to surge, laser hazards, so you want to check and selection of good potentiometer in order to prevent inadvertently missed in the adjustment process.