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Photonics Spectra
Feb 2005
Newport CorporationRequest Info
VACUUM-SAFE ACTUATOR Newport Corp. has expanded its NewStep series with the NSA12V6, a vacuum-compatible actuator for laser cavity optimization, for adjusting beam delivery optics, for measuring beam coherence length and for other applications requiring fine adjustment of lenses and mirrors. Suitable for processes operating in a vacuum to 1026 t, the device enables precision motorized control of a variety of translation stages and mechanically adjustable mounts. Measuring 60 × 30 mm, it provides up to 11 mm of travel and uses a high-torque stepper motor to provide 0.3-µm steps or better at 1 mm/s with a maximum load of 28 newtons. The device includes a nonrotating tip that can move large loads without long-term degradation of the actuator-stage interface.


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laser cavity
A means of optical confinement intended to increase the gain length of radiation prior to emission from the device. The means of optical confinement used to increase gain path length vary depending upon the properties of the beam desired within the lasing medium. High light intensities occur within a laser cavity and dielectric mirrors coated for the lasing wavelength are used.The position and curvature of the optical cavity elements may be altered in order to optimize the laser performance as...
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