Application Notes
[Application] Single Frequency Fiber Laser (1-2micron)
Author:Sintec Optronics Time:Nov 27, 2018 View:

Acoustic Sensing

Acoustic sensing systems use low-noise single-frequency lasers to probe an optical fiber cable for changes in strain and temperature. The fiber is then a distributed sensor that can be used to monitor high-value structures such as oil and gas pipelines or wells, bridges and dams, or provide in-ground perimeter security at borders and industrial and military facilities. Arrays of these cables can be used as sonar detection systems, and are currently being developed for naval surveillance measures (towed array sonar) and oil and gas reservoir monitoring.

STNP manufactures very low-noise fiber lasers for demanding fiber acoustic sensing applications such as pipeline monitoring, oil and gas field monitoring, and perimeter security.

 

Lidar

LIDAR (Light Detection and Ranging) is an optical technique, analogous to RADAR (Radio Detection and Ranging), that uses laser light to probe targets at a distance. LIDAR systems can be found in ground, airborne, and even space-based platforms, and usually use pulsed lasers. LIDAR systems can not only map targets and measure distances, but are often also used to study the target’s chemical constituents or properties. LIDAR systems can be used in applications such as terrain mapping, wind farm mapping (to determine wind speeds at locations and altitudes around a wind farm), wind shear detection around airports, remote gas emission sensing (for example, CO2detection), spacecraft rangefinding, and standoff biological agent detection.

STNP designs and manufactures custom 1.0, 1.5, and 2.0-micron fiber lasers for LIDAR applications such as CO2 measurement and remote wind measurement.

 

Injection Seeding

Injection seeding is the process where a low-power single-frequency laser is used to inject a small optical signal into a power amplifier to produce high-power single-frequency laser output. This technique is often used, for example, with Nd:YAG lasers, but the principle applies to other types of lasers as well. Systems can be pulsed or continuous wave (CW). The amplified high-power single-frequency laser light can then be used for applications such as atomic or molecular spectroscopy, photon Doppler velocimetry (PDV), velocity interferometry system for any reflector (VISAR), and laser Doppler velocimetry (LDV).

STNP manufactures single-frequency continuous-wave (CW) and custom quasi-continuous-wave (QCW) and pulsed lasers for seeding high-power neodymium (Nd) lasers.

 

Coherent Communications

Coherent communication systems take advantage of the long coherence length of single-frequency lasers by mixing a detected optical system with a local laser oscillator to create a difference frequency signal which is detected and amplified. With ever-increasing demands for fiber-optic links to carry more data, coherent communication techniques offer solutions to increase the bandwidth of optical links.

STNP single-frequency fiber lasers provide extremely low amplitude and phase noise for applications requiring high optical coherence.

 

Environmental Sensing

Environmental sensing techniques are used to identify the characteristic spectroscopic optical "fingerprint" of an atom or molecule. In fields such as pollution sensing and monitoring or battlefield standoff detection, laser-based techniques are often the solution to monitor trace chemicals at a distance.

STNP designs and manufactures mid-infrared (IR) supercontinuum lasers, 2-micron lasers, and mid-IR transport fibers for applications such as detection and monitoring of greenhouse gases, pollutants, and in-process chemicals.

Optical Trapping

Optical trapping techniques are used by scientists to study fundamental quantum mechanical properties of atoms. These techniques, such as magneto-optical traps and lattice traps, use low-noise lasers to cool and contain atoms in an ultra-cold state. In this state, scientists can study properties of Bose-Einstein condensates, and perform experiments in quantum computing and quantum cryptography. These techniques, once only the realm of pure research, are moving into applications such as portable and compact ultra-precise clocks and navigational equipment.

STNP designs and manufactures mid-infrared (IR) supercontinuum lasers, 2-micron lasers, and mid-IR transport fibers for applications such as detection and monitoring of greenhouse gases, pollutants, and in-process chemicals.

 

Short Pulse Amplification

In the past, picosecond and femtosecond high-energy pulse amplification has been limited to bulky systems based on free-space optical components. With our highly doped non-silica glass technologies, we are able to achieve high levels of amplification within all-fiber systems without introducing excessive levels of pulse distortion. We are enabling the next generation of turnkey high-power ultrafast laser systems for applications such as ultrafast-pulse industrial micromachining and high-speed very low-latency telecommunication optical amplifiers.

STNP unique non-silica fiber technology is ideal for short-length, high-gain signal amplification, providing amplification of short pulses without introduction of non-linear distortion effects.

 

SBS-Free Amplification

Stimulated Brillouin Scattering (SBS) is an effect between a high-power laser beam and the transport medium, especially in an optical fiber, whereby the laser beam frequency is shifted and broadened. SBS thus limits the amount of power of single-frequency laser light that can be carried through an optical fiber. By using our unique non-silica glasses, we can manufacture high-power optical amplifiers that maintain single-frequency performance.

STNP unique non-silica fiber technology is ideal for short-length, high-gain signal amplification, providing amplification without introduction of non-linear distortion effects.

 

 

 

 

 

 

 

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