Hello,
I am a chemistry student currently working on photoacoustic spectroscopy (frankly speaking; working to build a photoacoustic spectrometer). In my experiment, I am using IIIb series 633 nm HeNe laser, 25 mW , bombarded to malachite green sample in stainless steel compartment, I used a piezoelectric tranducer as a detector to sensorize heat generation by the sample. I have some problem to amplify signal or precisely voltage amplification. Do you guys have ideas how to amplify voltage generation from piezoelectric tranducer to be ready to displayed in the osciloscope. Fyi; from piezoelectric tranducer i notice the output votage as in range 88 mV - 235 mV by multimeter ( I am not quite sure whether this readable data is certainly could be believed or not since some power amplifier was not working to amplify this).
thank you
Deski