Several factors can influence the linewidth of a laser:
l Single-frequency operation: As mentioned earlier, achieving true single-mode operation is crucial for the narrowest linewidth. Any deviation towards multi-mode operation broadens the spectrum.
l External noise: Environmental factors like vibrations, temperature fluctuations, or even power supply noise can...
Narrow linewidth lasers are used in a wide range of applications due to their high monochromaticity and coherence. Here are some of the most common applications:
Scientific Research
l Spectroscopy: Narrow linewidth lasers are essential for high-resolution spectroscopy, which involves studying the interaction of light with matter. They can be used to identify and analyze the spectral...
Achieving and maintaining narrow linewidth in lasers is a complex task, hindered by several factors:
Technical Challenges
Noise: Laser linewidth is broadened by various noise sources, including spontaneous emission, thermal fluctuations, and mechanical vibrations. Suppressing these noise sources requires sophisticated engineering and isolation techniques.
Cavity Stability: The...
When selecting a narrow linewidth laser, several key factors should be considered to ensure that it meets the specific requirements of the application. These factors include:
l Linewidth: The required linewidth depends on the application. For example, high-resolution spectroscopy may require a linewidth of less than 1 MHz, while less demanding applications may be able to...