Laser beam profiler
Thorlabs

Thorlabs' dual scanning slit Beam Profiler is easy to align and features fast simultaneous measurement of both the X and Y profiles with a large dynamic range of 72 dB. The beam diameter is measured in accordance with the ISO11146 standard. The diameter of the beam can be displayed using a number of industry standard clip levels such as 1/e2 (13.5%) and 50% or an arbitrary clip level input. Please see the User Interface tab above for more details on the functionality of the software.

The system is available in 4 wavelength ranges: UV 200-1100 nm, VIS 400-1100 nm, IR 700-1800 nm, and IR 1000-2700 nm. Additionally, two slit and aperture sizes are offered: BP104 models have a physical aperture diameter of 4 mm and can accommodate beam diameters as small as 10 µm (1/e2), while BP109 models have a physical aperture diameter of 9 mm and accommodate beam diameters as small as 20 µm (1/e2). The operating principles are detailed on the tab provided above and labeled "Operation."

A variable scan rate of up to 20 Hz allows for real time optical system alignment. Both beam parameters and spatial power distribution can be monitored in dynamically changing systems. To obtain absolute optical power measurements, the user can perform a calibration using the integrated power meter and software and applying a calibration measurement at the wavelength of interest.

The Beam Profiler can work directly with a connected PC with no additional hardware or power supply required. For ease of use, Thorlabs utilizes a Hi-Speed USB2.0 interface to connect the measurement head with user supplied PC. Flexible data export options and the readout option via TCP/IP to standart data socket servers ease the integration into customized data processing environments.