1. What is a narrow linewidth laser
A narrow linewidth laser is a device that produces a laser beam with an extremely narrow spectral linewidth. Spectral linewidth refers to the range of differences in the frequency of an optical signal, usually expressed as bandwidth per unit frequency. The spectral linewidth of a narrow linewidth laser is relatively narrow, usually between hundreds of kilohertz and a few megahertz.
Compared with ordinary lasers, narrow linewidth lasers use a series of technologies to reduce spectral linewidth. This includes using a single longitudinal mode laser cavity, increasing the length of the cavity, and introducing a spectral filter. These measures help to reduce the phase difference between different frequency components of the laser output, thereby reducing the spectral linewidth.
2. Multiple application scenarios of narrow linewidth lasers
I, Communication field
Narrow linewidth lasers are widely used as light sources and receivers in fiber optic communication systems. In terms of light sources, narrow linewidth lasers can provide high-quality and stable optical signals, reducing signal distortion and error rate. In terms of receivers, narrow linewidth lasers can provide high sensitivity and precision optical detection, which can enhance the signal detection ability of the receiver. In addition, narrow linewidth lasers can also be used for functions such as optical filtering and frequency conversion.
II,Spectral analysis field
Narrow linewidth lasers are also widely used in the field of spectral analysis. By selecting appropriate wavelengths and linewidths, narrow linewidth lasers can be used for precise spectral analysis and measurement. For example, narrow linewidth lasers can be used to measure optical absorption, optical emission, and molecular spectra in the atmosphere. In addition, narrow linewidth lasers can also be used in fields such as gas sensors and environmental monitoring.
III.Optical measurement field
Narrow linewidth lasers are also widely used in the field of optical measurement. For example, narrow linewidth lasers can be used for laser ranging, laser interference, and laser speckle measurements. By using a narrow linewidth laser, the accuracy and sensitivity of the measurement system can be improved.
IV. The field of life sciences
Narrow linewidth lasers also have many applications in the field of life sciences. For example, narrow linewidth lasers can be used for fluorescence excitation and detection. In addition, narrow linewidth lasers can also be used in fields such as microscopic imaging, cell recognition and separation, and gene sequencing.
Box optronics
Box optronics
'sales@boxoptronics.com'