Mikael Malmström

9 Questions 10 Answers 0 Followers

Questions related from Mikael Malmström

High power q-switched lasers with 100 ns pulses? do they exist?

Im looking for a compact pulsed laser with 50-150 ns long pulses and prefereably 500-1000 mJ of pulse power. All Q-switched lasers I seem to find have 5-15 ns long pulses. (wavelength is not...

06 March 2025 5,062 9 View

Does EMAT work on lead?

do you know if it’s possible to generate and detect ultrasound with electromagnetic transducers on lead (Pb)?

16 December 2024 7,778 2 View

Does tilting a AR windows red- or blue-shift the transmission?

I intend to have my anti-reflection coated window at roughly 20° angle of incidence the question is if it red shifts or blue shifts in terms of transmitted wavelength

31 May 2024 2,628 2 View

Does PM MM fibers exist, if not why?

It seems as if Polarization Maintaining fibers only exist in Singel Mode versions. Is that because the PM capabilities does not work for higher order modes, or has there simply never been any...

28 January 2022 5,222 5 View

Which wavelength is better for two wave mixing in GaAs, 1064 or 1030nm?

We want to buy a new laser Doppler vibrometer with a two wave mixing interferometer. We can choose between 1030 or 1064 nm SLM laser. Is there any difference in the photo refractive effect at...

28 October 2020 9,544 2 View

How to analytically describe a band pass filter Gaussian pulse?

I measure pulses on some background and my measurment system has an analog band-pass filter. I usually still have to do extra band-pass filtering digitally afterwards in order to remove the...

30 January 2020 3,686 4 View

Does anyone have experience of the broadly tunable QCL from daylight solution or Bloch engineering?

In terms of real output power vs specs, reliablility ease of programmablility tunablillity (i.e. the step motor vs MEMS-grating)

24 June 2015 2,034 2 View

Here is an idea for a additive manufacturing (AM) defect monitoring system with laser ultrasound (LUS)

The idea is so simple that it’s probably been though of before, but… The LUS system usually consists of one detection laser, and one generation laser. The additive manufacturing printer usually...

01 January 1970 770 0 View

Why do we still have skid-marks in steel production?

The reason for the skidmarks in steel production is due to the walking beams of the furnaces. Why is this problem not solved yet? One solution could be to either have the stationary beams at a...

01 January 1970 1,295 0 View