The Light Source can Limit Coupling Efficiency These beam properties follow from wave optics analysis of a single mode fiber's guided mode (Kowalevicz). Diameter of the beam waist equal to the mode field diameter (MFD) of the fiber.ĭeviations from these ideal coupling conditions are illustrated in Figure 2.Beam waist centered on the fiber's core.Beam waist in the plane of the end face.Normal incidence on the fiber's end face.Assuming the fiber's end face is planar and perpendicular to the fiber's long axis, coupling efficiency is optimized for beams meeting the following criteria (Figure 1): Range Limited to 4 mm (0.16") by the NanoMax Stageįigure 1 For maximum coupling efficiency into single mode fibers, the light should be an on-axis Gaussian beam with its waist located at the fiber's end face, and the waist diameter should equal the MFD.Īdjusting the incident beam's angle, position, and intensity profile can improve the coupling efficiency of light into a single mode optical fiber.Included with MAX383(/M) and MAX381(/M) Stages.For more detailed information on each drive, please see the full presentation for our Stepper Motor Drive, Differential Micrometers and Thumbscrew Drives, or In-line Piezo Actuators. Some drives have limited travel range when used with the NanoMax 3-axis flexure stages see the table for more details. The drives compatible with our 3-axis NanoMax stages are summarized below. PAA613 3 m Extension Cables are also included.If options are required for off-center mounting of components, the grooved top plate can be replaced with the RB13P1 adapter plate (sold at the bottom of this page), which has an array of 1/4"-20 (M6) and 8-32 (M4) mounting holes. A wide range of accessories is available to mount items such as microscope objectives, collimation packages, wave guides, fiber, and much more. The crossed pattern allows for changing the orientation of the stage for right- and left-handed use. Two central keyways in the top platform allow for rapid system reconfiguration while maintaining accessory alignment (see the image above and to the left). To order blanking plugs, please contact Tech Support. If for any reason the stage is operated with the micrometer drives removed, blanking plugs must be fitted before the piezo actuators can function. Please note that the piezo mechanism uses contact with the micrometer drives in order to move the top platform. This feedback signal can be used to compensate for the hysteresis, creep, and thermal drift that is inherent in all piezoelectric elements. Stages with closed-loop piezo actuators have internal strain gauge displacement sensors that provide a feedback voltage signal that is linearly proportional to the displacement of the piezoelectric element. For nanopositioning applications, we have versions with internal piezoelectric actuators. The drives are coupled directly to the base to minimize any unwanted motion in the system. For compatible drive options, please see the Drives tab. The modular design of our 3-axis NanoMax stages allows the drives to be removed and replaced at any time. Stages that are pre-configured with differential micrometer actuators or stepper motor actuators are offered below for out-of-the-box operation. Adapter plates are available for mounting our NanoMax stages to a wide range of other Thorlabs rotation and long travel linear stages. The nominal deck height of the stage is 62.5 mm, which matches that of our 3-Axis MicroBlock compact flexure stages and RollerBlock long travel stages. Each unit provides 4 mm of X, Y, and Z travel with a maximum load capacity of 1 kg. The parallel flexure design ensures precise, smooth, and continuous motions with negligible friction. Thorlabs' 3-Axis NanoMax Flexure Stages are ideal for use in fiber launch systems or applications that require sub-micron repeatability. Modular Design for Interchanging Actuators.All Adjusters Coupled to the Base to Minimize Crosstalk.Compact Size Measuring 112.0 mm x 112.0 mm Without Drives.Grooved Top Plate Ensures Alignment of Multi-Axis Stage Accessories.Flexure Design Ensures Smooth Continuous Motion and Long-Term Stability. Please see the Specs Tab for Complete Specifications.
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