1570nm single wavelength laser source Manufacturers

Fiber optic gyroscope is the fiber angular velocity sensor, which is the most promising one among various fiber optic sensors. The fiber optic gyroscope, like the ring laser gyroscope, has the advantages of no mechanical moving parts, no warm-up time, insensitive acceleration, wide dynamic range, digital output, and small size. In addition, the fiber optic gyroscope also overcomes the fatal shortcomings of ring laser gyroscopes such as high cost and blocking phenomenon. Therefore, fiber optic gyroscopes are valued by many countries. Low-precision civilian fiber optic gyroscopes have been produced in small batches in Western Europe. It is estimated that in 1994, the sales of fiber optic gyroscopes in the American gyroscope market will reach 49%, and the cable gyroscope will take the second place (accounting for 35% of sales).

Polarization extinction ratio and polarization degree are both physical quantities that describe the polarization state of light, but their meanings and application scenarios are different.

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The wavelength of a laser describes the spatial frequency of the emitted light wave. The optimal wavelength for a specific use case depends heavily on the application. During material processing, different materials will have unique wavelength absorption characteristics, resulting in different interactions with the materials. Likewise, atmospheric absorption and interference can affect certain wavelengths differently in remote sensing, and in medical laser applications, different skin colors will absorb certain wavelengths differently. Shorter wavelength lasers and laser optics have advantages in creating small, precise features that generate minimal peripheral heating due to smaller focused spots. However, they are generally more expensive and more susceptible to damage than longer-wavelength lasers.

A femtosecond laser is an "ultrashort pulse light" generating device that emits light only for an ultrashort time of about one-gigasecond. Fei is the abbreviation of Femto, the prefix of the International System of Units, and 1 femtosecond = 1×10^-15 seconds. The so-called pulsed light emits light only for an instant. The light-emitting time of the flash of a camera is about 1 microsecond, so the ultra-short pulse light of femtosecond only emits light for about one billionth of its time. As we all know, the speed of light is 300,000 kilometers per second (7 and a half circles around the earth in 1 second) at an unparalleled speed, but in 1 femtosecond, even light only advances by 0.3 microns.