Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

Picometer-accuracy, laser-metrology gauge for Keck interferometer differential-phase subsystem

[+] Author Affiliations
Yekta Gursel

Jet Propulsion Lab. (USA)

Proc. SPIE 4838, Interferometry for Optical Astronomy II, 995 (February 24, 2003); doi:10.1117/12.459329
Text Size: A A A
From Conference Volume 4838

  • Interferometry for Optical Astronomy II
  • Wesley A. Traub
  • Waikoloa, Hawai'i, USA | August 22, 2002

abstract

Keck Interferometer differential-phase planet-detection system requires a picometer accuracy, large (2 μm to 4 μm) amplitude optical path-length modulator that can operate at fairly high frequencies (250 Hz, 750 Hz, and 1250 Hz, a partial, triangular wave motion). We have developed a gauge which monitors the amplitude of the motion of the path-length modulator and which is capable of reaching a sensitivity of at least 3 pm per sqrt(Hz) within a band width of 1 Hz at 250 Hz, 750 Hz, and 1250 Hz. Two of these gauges are built. The gauges are compared to each other while monitoring a common optical path-length modulator to determine their accuracy. In this paper, the gauge construction details, the results of the gauge accuracy tests as well as the final path-length modulator performance details are presented.

© (2003) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Yekta Gursel
"Picometer-accuracy, laser-metrology gauge for Keck interferometer differential-phase subsystem", Proc. SPIE 4838, Interferometry for Optical Astronomy II, 995 (February 24, 2003); doi:10.1117/12.459329; http://dx.doi.org/10.1117/12.459329


Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).

Figures

Tables

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Proceedings Articles

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.