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Laser Doppler velocimetry is a method for measuring the velocity of transparent, or semi-transparent fluids. This process relies on a shift in frequency of the output beam to calculate the speed at which the fluid is moving. Unlike its counterpart, particle imaging velocimetry, the Doppler variation does not require a particle to be added to the flow reducing the sample preparation and contamination. It must be noted though that the signal detection and processing can be somewhat complicated. Since this change in frequency tends to be relatively small, it is essential that the laser source is highly coherent and stable. For this reason, single-frequency continuous-wave laser sources are ideal. On this page, you will find our full range of single-frequency laser sources for this application
The Matchbox series offers excellent performance and reliability in the “World’s Smallest” ultra-compact, all-in-one, integrated laser head. They can operate on a 5V power supply while maintaining low noise operation. The monolithic design of the Matchbox Series laser includes thermally stabilized optics in a hermetically sealed housing, ensuring reliable and maintenance-free operation. This series is available in wavelengths from 405 nm thru 1064nm, with options for collimated beam or fiber-coupled output, and single-mode and multimode version.
The Skylark series of ultrareliable, high performance, CW single-frequency lasers are available at a variety of wavelengths with high average powers, making them well suited for a variety of highly specialized scientific and industrial applications. BRaMMS Technology® enables superior performance, high output powers, and outstanding beam properties in an overall compact footprint. The Skylark series of lasers are utilized in a range of applications including holography, metrology, spectroscopy, and quantum technology.
The LaserBoxx-SLM series are single longitudinal mode (SLM) CW diode laser modules available in green, yellow, red, and NIR wavelengths, delivering ultra-narrow linewidths, with excellent temperature stability and low noise current. Embedded firmware locks the laser on the same mode at each startup. This customizable, compact, self-contained laser module is available in turn-key or OEM versions and utilizes a proprietary alignment-free, monolithic resonator, and comes standard with a graphic user interface with remote diagnostics via USB, RS232, or direct I/O interface. With modulation capabilities and adjustable power options, the SLM Series is versatile and adaptable to a wide range of applications.
The LaserBoxx Low Noise series of CW diode laser modules, with a variety of wavelengths from 375 to 785nm and output powers up to 350mW, offers highly customizable laser solutions for OEM and plug & play modules. With advanced features such as excellent beam quality, stability, and modulation capabilities, our lasers provide ultra-low noise and a wide range of options for SM, MM, and PM fiber coupling. Our dedicated control software, USB and RS232 interfaces, and external controller with power display make integration, operation, and remote diagnostics a breeze. Additionally, our rugged and compact design and wide variety of standard wavelengths ensure that our lasers can meet your specific needs.