As long as the current is actually regulated right soft start is purely cosmetic not taking into account my previous point, being that soft start is mainly there for the IC to catch up without overshooting, that 100mhz spec refers to the diode's typical forward current but should only minimally change even if overcurrent. Let me remind you telecom diodes switch way faster at way higher currents to accommodate for losses in the fibres. If you still believe that a soft start beyond the timeframe I mentioned will benefit the diode somehow please enlighten me with more than just I think that they were not designed hence they can't.Since we normally push these diodes far past what they were designed to do I don't think it is all that simple. Having a soft start can help if it is slow enough as these diodes were never designed to be switched off and back on at these currents at 100 MHz. It isn't just a cosmetic feature.
1) No because the power button switches the power going to the driver, the driver will always perform the 1-15ms SS when switchedok, thank you for that explanation. This is good news for me.
I assume the 250millisecond soft start feature of the ACS4500BU driver is nice but not necessary to increase laser diode lifespan.
So, regardless of whether we are using a 50mW laser or a 7W laser:
1) Turning a laser on and off manually using the power button does not decrease or adversely affect laser diode life span, regardless of the number of cycles.
2) Each manual on-off cycle is basically equivalent to a single pulse at 100MHz in terms of electrical stress on the diode.
3) 0.5ms soft start is long enough, time wise, to prevent overshoot because 0.5ms is a longer duration than a single pulse of a few nanoseconds at 100MHz.
A few questions:
1) Is a Lasorb necessary or is it another cosmetic feature in a laser pointer?
2) Besides the temperature of the diode and current overshoot, what other things commonly affect laser diode lifespan?