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CCD Camera Beam Profiler![]()
BC106N-UV Filter Wheel with Post and Post Holder Versatile Software Package Application Idea Use the BC106N-VIS with the ![]() Please Wait
Features
Thorlabs' Camera-Based Beam Profilers allow complex mode patterns (like flat top and donut) to be identified while optimizing a laser system. Compared to scanning slit beam profilers, camera beam profilers can capture a more detailed beam profile and provide a true 2D analysis of the beam's power density distribution. These beam profilers are suited for use with either continuous wave or pulsed sources. Several trigger modes allow flexible capturing of single pulses, including a TTL input for triggered single pulse detection of signals with a repetition rate lower than 50 kHz. In non-trigger mode, pulses with repetition rates above 50 kHz will be seen as a continuous wave source by the beam profiler. ![]() Click to Enlarge Front View of the BC106N-UV Beam Profiler Each beam profiler contains a high-quality 12-bit CCD camera with an active sensor size of 8.77 mm x 6.6 mm, a resolution of 1.4 Megapixels, and a 20 µs minimum exposure time. Compared to CMOS profilers, the high-quality CCD camera offers excellent sensitivity and low noise and enhanced global shutter efficiency for improved exposure accuracy and uniformity. The automatic dark level calibration provides very stable dark currents independent of the device settings, eliminating the need to recalibrate the dark level for each user setting. An integrated filter wheel with 6 high-quality neutral density (ND) filters allows the profiler to be adapted for use with beam intensities from femtowatts to 1 W (see the Specs and ND Filter tabs for details). Each filter housing is internally SM05 (0.535"-40) threaded for easy integration with Thorlabs' lens tube systems and mounts for other optical components such as additional attenuation filters. An 8-32 (M4) tap on the side of the beam profiler housing and 8-32 (M4) and 1/4"-20 (M6) taps on the bottom of the housing allow for two different mounting orientations. The integrated power meter can be user calibrated and is perfectly suited for simultaneous power and beam shape optimization without the need for an external power meter. A measured mean value of the ambient light intensity is subtracted from the beam profile measurement so as to compensate for ambient light. The automatic exposure and gain control feature adapts the camera settings to the actual beam intensity. The USB 2.0 interface allows up to 10 full frames per second at full resolution. Measurements at higher frame rates can be achieved and transferred with reduced frame sizes. The BC106N Beam Profilers are shipped with Thorlabs' Beam software package. Features of the software package are listed under the User Interface tab. Thorlabs' Beam software can be downloaded via the links on the Software tab, along with programming reference guides for LabVIEW™, Visual C++, Visual C#, and Visual Basic. Extension sets are available below to convert these camera beam profilers into a fully-automated M² measurement system. Thorlabs also offers a scanning slit beam profiler, as well as a complete M² analysis systems with the beam profiler included. ![]() Click to Enlarge The neutral density filter will begin to heat up and can be damaged if exposed to incident powers above 1 W for more than a few seconds. ![]() Click to Enlarge The neutral density filter will begin to heat up and can be damaged if exposed to incident powers above 1 W for more than a few seconds. ![]() Click to Enlarge The graph above shows the relative reponse curves of the BC106N-VIS and the BC106N-UV without the use of an ND filter. The blue-shaded region marks the specified operating wavelength range for the BC106N-UV, while the white shaded region is this range for the BC106N-VIS. The Lumigen coating on the CCD in the BC106N-UV increases the chip response at lower wavelengths, at the expense of sensitivity at visible wavelengths.
Neutral Density FiltersSix neutral density (ND) filters are included with each CCD camera beam profiler. The absportive ND filters have antireflection (AR) coatings on both sides, while the reflective ND filters that come with the BC106N-UV have an AR coating on their non-reflective surface. This feature, combined with a 30 arcminute wedge, reduces artifacts in the measured beam profile that result from internal reflections in the filter. The plots below show the filter attenuation curves in dB. The equivalent % transmission is provided in the raw data file for each filter set.
BC106N-UV(/M)The BC106N-UV comes with six neutral density filters, three of which are absorptive and three are reflective. The three reflective ND filters have an AR coating for the 220 to 340 nm range on their non-reflective surface. Since the BC106N-UV's camera is also sensitive to short wavelength visible light (see the relative response curve on the Specs tab), three absorptive ND filters with an AR coating on both sides are included for use near the 350 nm upper limit of the specified wavelength range.
BC106N-VIS(/M)The BC106N-VIS comes with six absorptive ND filters. The filters have an AR coating deposited on both sides, with one set coated for the 350 nm to 700 nm range and the other coated for the 650 to 1050 nm range. ![]() Click to Enlarge Click for Raw Data The graph above shows the filter attenuation with respect to wavelength for the six filters included with the BC106N-UV. The absorptive filters are recommended for use near the 350 nm upper limit of the BC106N-UV's operating wavelength range. ![]() Click to Enlarge Click for Raw Data The graph above shows the filter attenuation with respect to wavelength for the six filters included with the BC106N-VIS. ![]() Click to Enlarge The graph above provides an example of the performance of the AR coating applied the reflective ND filters that are included with the BC106N-UV(/M). The coating is designed to provide less than 0.25% average reflectance over the blue-shaded region. ![]() Click to Enlarge The graph above provides an example of the performance of the AR coating applied to three of the filters that are included with the BC106N-VIS(/M) and the absorptive ND filters included with the BC106N-UV(/M). The coating is designed to provide less than 0.5% average reflectance over the designated coating range. More information on the coating performance may be found here. ![]() Click to Enlarge The graph provides and example of the performance the AR coating applied to three of the filters that are included with the BC106N-VIS(/M). The coating is designed to provide less than 0.5% average reflectance over the specified AR coating range. More information on the coating performance may be found here. Trigger InputBNC FemaleDo not exceed -0.5 V ... +6.5 V. Input Impedence > 100 kΩ Computer ConnectionUSB Type Mini-BUSB Type Mini-B to Type A Cable Included Main Window![]() Click to Enlarge The main window of the GUI includes the menu bar, tool bar, status bar, and a frame where several windows can be displayed. This version of the Main Window includes several panels: Beam Settings, Calculation Results, 2D Projection, and 3D Profile. The Beam Settings Panel displays all important information in a single location; this panel can be unpinned from the main window and moved to a second location, such as another monitor. Thorlabs Beam Software for the BC106N Beam Profilers
Thorlabs' Camera Beam Profilers, Scanning Slit Beam Profilers, and M² Measurement Systems all use the Thorlabs Beam software package. The screenshots below highlight key features and measurement modes that can be used with our camera beam profilers, including 2D projections of the beam profile and measurement of the beam stability and position. If an M² Extension Set (available below) is added to the system, the software also enables M² and beam divergence measurements. 2D Projection of the Beam Profile![]() Click to Enlarge The 2D Projection graph shows the image from the Beam Profiler indicating the power intensity distribution within the selected Region of Interest (ROI). Buttons along the side allow users to save the image, show or hide the x and y scales, mark the centroid or peak positions, and display an approximated Beam Ellipse superimposed on the image. Calculation ResultsThe Calculation Results window displays the results of calculations performed by the software, including beam width, centroid and peak positions, power, ellipticity, and fits of the beam profile. This panel also includes a Pass/Fail test. For each parameter, a minimum or maximum can be set as criteria. After the calculations are complete, the user can save them in .txt, csv, or .xls format. In addition to saving single measurement results, diagrams, and device data, the software can automatically sequentially save this information for a series of measurements.
Beam Stability![]() Click to Enlarge The Beam Stability Window allows the stability versus time to be recorded and viewed. Display options include the Centroid Positions, Latest Plotted Centroid, Rolling Centroid Positions, Reference Positions, and Smallest Enclosing Circle. Plot Centroid and Peak Positions![]() Click to Enlarge The positions of the X and Y peak and X and Y centroid positions can be displayed as a function of time in this window. M2 Measurements![]() Click to Enlarge The beam diameter and location of the beam waist are shown after an M² analysis has been performed. Note: This functionality is only enabled when one of the M² analysis systems is connected to the PC. Divergence Measurements![]() Click to Enlarge The divergence of the beam is shown after an M² analysis has been performed. Note: This functionality is only enabled when one of the M² analysis systems is connected to the PC.
Software Packages for Thorlabs' Beam ProfilersThe Beam software package can be downloaded by clicking on the Software button below. The software download page also offers programming reference notes for interfacing with our beam profilers using LabVIEW™, Visual C++, Visual C#, and Visual Basic. Please see the Programming Reference tab on the software download page for more information and download links. Features
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These extension sets are designed to convert Thorlabs' Camera or Scanning Slit Beam Profilers into a fully automated, motorized M² measurement system. The M2MS has internal mirrors for wavelengths between 400 - 2700 nm and the The beam profiler and focusing lens remain in a fixed position. For M2 measurements, the beam path length is varied using a movable retroreflector mounted on a previous-generation DDSM100/M translation stage, which has a translation range of 100 mm and a maximum velocity of 500 mm/s. The side of the M² measurement system features an integrated USB 2.0 hub, which has ports for the beam profiler, one other device such as the TSP01 USB temperature and humidity controller, and a mini USB output connection to a PC. The translation stage inside of the system also communicates with the computer through this hub. The system is controlled via the Thorlabs Beam software package, which is also use to control our beam profilers (see the Software tab), which enables accurate measurements of a variety of beam-related parameters. The housing of the M2 measurement rests on four feet at the corners created by a 0.5 mm deep relief cut in the base. A set of RDF1 rubber damping feet are included. Five M6 taps allow for the installion of four damping feet with one near each corner or in a configuration using three damping feet. More information about these complete M² measurement systems, as well information about M2 measurement systems that incorporate our CCD camera beam profilers can be found here. Lenses Included with M2MS-AL*Lenses with f = 250 mm Mounted in CXY1QF Quick Release Plate: *Additional lenses for shorter UV wavelengths and the CXY1QF quick release front plate are available separately to enable further customization of the M2 measurement system. Lenses Included with M2MS*Lenses with f = 250 mm Mounted in CXY1QF Quick Release Plate:
*Additional lenses for longer IR wavelengths and the CXY1QF quick release front plate are available separately to enable further customization of the M2 measurement system. Accessories Included with M2MS-AL and M2MS
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