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Hello, I need to diffuse the beam from NICHIA NUBM36 to produce 20X20cm spot at 30-40 mm from the array. I was suggested two solutions: NUMB36->collimating lenses array->lens and rod or fly's eye. I don't think I need to collimate the beam more as the beam produced by NUBM36 is highly...

While it is a well known fact that LEDs can be overdriven when are run in pulsed mode generally it is not recommended to overdrive LDs. I found a number of papers which report that various CW LDs can reliably produce up to 30 times higher output in pulsed mode when driven with <10nc pulses. I...

I have CW AlGaAs multi mode injection 1W IR LD. According to Chinese vendor it can operate in pulse mode. I’m running it with microsecond long pulses and < 1kHz frequency. Should I expect a significant decrease in its lifetime?

It looks like quite a few people have built Peltier cell based laser power meters. I’ve seen different approaches to the heater for calibration and black paint. One approach to the heater is to attach a couple of resistors to the front side of the cell. The problem with this approach is that...

Hi, I want to drive a strip of 15 650 nm LDs (3V, 40ma) with 48V switching power supply. I intend to use constant current LED diver NSI45035JZ. https://www.onsemi.com/pub/Collateral/NSI45035JZ-D.PDF. I’ve got the driver but my scope has a pretty low bandwidth( 0- 200kHz) so I would not be able...