Please enable JavaScript.
Coggle requires JavaScript to display documents.
Sensor Used To Measure Laser Power and Energy: Thermopiles - Coggle Diagram
Sensor Used To Measure Laser Power and Energy: Thermopiles
Principle of Thermopiles
Works on the principle of thermoelectric effects :
A voltage is generated from the temperature difference between two dissimilar metals
Converts thermal energy to electrical energy
Uses
Measure laser power from µW to W
for a broad spectrum of wavelengths ranging from UV to MIR
Strength
Can handle the most power of any type
Have low angle and wavelength dependence, making it easier to measure some types of lasers accurately
Capable of integrating long
pulse widths
Measure the energy of single pulses between 1ms and 10s in length with energies from 0.5 joules to hundreds of joules
Common Application
Medical Field
Hair removal
Skin resurfacing
Advantages
It's used to monitor the temperature of moving objects when contact-based sensors aren't practical
The usage of numerous thermocouple devices results in a higher output voltage
It is a non-contact temperature sensor device that transfers heat via infrared radiation
Disadvantages
Direct sunlight or dampness should be avoided while using thermopile sensors. The sensor device's performance may be harmed or deteriorated as a result of this
The item must entirely occupy the field of vision (FOV) of the thermopile sensor device for reliable temperature measurement
Because thermopile sensors are unchanged sensitive, they must be kept in conductive material to avoid static discharges and static fields
