Fiber lasers are highly effective in laser spectroscopy applications due to their ability to produce stable, coherent, and unique wavelengths. They offer high precision and sensitivity.  Laser spectroscopy is increasingly being used in medical research, tracking air quality and artwork authentication. A common use of lasers in spectroscopy is Raman spectroscopy. In a Raman test, a laser light source is used to irradiate a sample. This sample reacts with the laser beam by phonons, a natural vibrations contained in atoms or molecules which react to light. This reaction between phonons and the laser beam can be studied by the change in wavelength of the original laser beam by a CCD camera.