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In the laser display industry the term “laser module” stands for a device that emits a single static laser beam of single or multiple wavelength(s); or colours when we are talking here about visible spectrum of light.
This is very different from the term “laser diode”.
Very often people confuse these terms so we explain them here.
The laser diode is quite a tiny electronic component that physically emits radiation. When it comes to semiconductor laser diodes, the radiation (light) they emit is coherent, meaning that emitted photons stick together and can form a laser beam.
The laser diodes that we use for manufacturing of our diode laser modules come from companies such as Mitsubishi, Osram, Sony, Nichia etc.
A laser module would include one or more laser diodes as well as some optical and electronic components that are used for running the diodes and beam shaping. All this is usually enclosed in some sort of housing.
The number of diodes used inside the module and internal structure of the laser module itself (which can be very complicated by the way) is determined by required module power output, required laser beam parameters such us size (diameter), divergence etc. and other properties that are set by the application the laser module is intended for.
The final laser beam is emitted from 1 or more semiconductor laser diodes whose emission is optically shaped, joined and aligned to create a single and focused laser beam coming out of aperture.
The quality of outputted laser beam is determined by:
Precision and expertise in designing, machining and assembly of laser modules are both essential for quality of end results.
The latest developments in laser diode fields made it possible to utilise semiconductor laser diodes across multiple industries.
Here at KVANT we don’t only manufacture laser modules that cover the visible spectrum of light and that are suitable mainly for laser display purposes, but we also develop and manufacture laser modules within invisible spectrum that are used in scientific and research applications.