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Shake, rattle, roll no more more: negative-stiffness vibration isolation improves imaging from laser and optical systems.(Vibration control)
Laser and optical systems, whether used in academic labs or industry, are very susceptible to vibrations from the environment, and so these instruments frequently need vibration isolation. They measure a very few angstroms or nanometers of displacement and need an absolutely stable surface upon which to rest. Any vibration, coupled into the mechanical structure of the instrument, causes vertical noise and a fundamental inability to measure these kinds of high-resolution features.
Negative-stiffness-mechanism or NSM vibration isolation enables laser and optical instruments such as scanning probe microscopes or SPMs, micro-hardness testers, and optical profilers to operate under severe vibration that would otherwise be impractical with passive and electronic isolation systems.
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Traditionally, large air tables are the isolators used for laser and optical equipment. The ubiquitous passive-system tables, adequate up until a few years ago, are now being seriously challenged by the need for more refined imaging requirements. Benchtop air systems do provide limited …
- Table improves optical systems from the ground up: incorporating active control...
- Magazine article from: Laser Focus World Booth, Warren December 1, 2006 700+ words
Photolithography and the semiconductor industry are facing a critical juncture. The 32 nm node (at which production photolithographic technology is able to pattern some specific chip features at 32 nm) is only a few years away, and next-generation methods for patterning the even-smaller,
- Effective vibration reduction stabilizes laser beams: the impact of vibration...
- Magazine article from: Laser Focus World Fisher, James Ryaboy, Vyacheslav M. August 1, 2008 700+ words
Optical tables and vibration isolation supports have become the de...even the most elegant vibration-isolation solution can be rendered useless...of vibration noise in most optical systems. Even in environments where...
- Well-designed buildings minimize vibration; while the use of...
- Magazine article from: Laser Focus World Ungar, Eric E. Zapfe, Jeffrey A. September 1, 2004 700+ words
...requires environments with minimal vibration (see Fig. 1). Optical systems sensitive to vibration are typically mounted on isolation...and costly active controls. [FIGURE 1 OMITTED] Good vibration isolation is typically obtained by the use of soft, resilient elements...
- Vibration-Damping Breadboards suit OEM applications.(Vibration-Damping...
- Magazine article from: Product News Network June 6, 2007 700+ words
...assembling lasers/small optical systems, prototyping, and precise...assembling lasers, small optical systems, prototyping, and precise...manufacture, and marketing of vibration isolation equipment, optical tables...
- Fast-steering mirrors improve active beam stabilization.
- Magazine article from: Laser Focus World Mitchell, Phillip V. Griffith, Peter B. Henderson, Donald K. October 1, 2001 700+ words
...development schedules, laser-based optical systems are being pushed to produce finer...performance. While using active and passive vibration isolation, athermalizing the design, and redesigning...function of the error frequency. Typical optical systems have PSDs dominated by thermal ...
- New Focus Introduces Variety of New Photonics Tools Products Expanding Breadth...
- Press release article from: Business Wire June 2, 2003 700+ words
...them offer the highest in performance, whether it's in vibration isolation, accuracy, power, or bandwidth -- and at extremely...spectroscopy, and the elimination of spurious reflections in optical systems such as in state-of-the-art photolithography equipment...
- Lenslet arrays measure aberrations in like devices. (Micro-Optics).
- Magazine article from: Laser Focus World Pulaski, Paul D. December 1, 2002 700+ words
...most common technique to measure wavefront aberrations in optical systems involves an interferometer, which requires vibrationisolation...interferometric techniques that eliminates the need for vibration isolation and complicated alignment. (1 2, 3) Such a wavefront...
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