Pulse width regulated circuit

diver circuit

laser protection circuit and laser chips were packaged to a laser module which was used in the pulse semiconductor laser sending system.When the laser pulses width is around several nanoseconds

the pins of packaged lasers introduce resistance which would distort the shape of waveform and reduce the energy coupling into laser chips. To get high peak power laser pulse with short pulse width and fast risetime

the structure of the laser chips was improved

and optoelectronic hybrid Integration was used to package driver and laser chips together into a module. In this way

short current pulses can be coupled into laser chips effectively. We analyze and prove that the improved laser module can produce optical pulses with better output parameters. On the same condition

when pulses width were around 4.5ns

laser module can produced 6 times larger peak optical power than that were produced by packaged laser with same driving circuit. The module can get Pulses with pulse width around 7ns and peak optical power 176W. U-P curve of laser module was measured when the pulse width is around 7ns.