A high-performance raman spectrometer

Li, Qingxiong

doi:10.1117/2.1200610.0472

Cited by 1 publication

(2 citation statements)

References 1 publication

(1 reference statement)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There is considerable spread in the data, but a net reduction in the polarization of the data is observed within the error bars. The less impressive reduction observed for the February 2007 data set may be due to improved intracycle pointing and the elimination of beam distortions with one of the subarrays that were present during the 2006 January observing run (Li et al 2006). Considering the magnitude of the translational misalignments and pointing drifts for the planetary data discussed here (see eqs.…”

Section: Corrections For Planetary Datamentioning

confidence: 94%

“…Current work in this field is being carried out at the Caltech Submillimeter Observatory (CSO) using the Submillimeter High Angular Resolution Polarimeter (SHARP). SHARP is a fore-optics module designed to be used in conjunction with the SHARC-II camera to form a highly sensitive, dual-wavelength (350-µm and 450-µm), polarimeter (Novak et al 2004;Li et al 2006). SHARC-II employs a 12 × 32 pixel bolometer array that is optically "split" by SHARP into three zones: two 12 × 12 pixel regions that record orthogonal states of linear polarization (which are labeled "H" and "V" for horizontal and vertical, respectively), and a 12 × 8 pixel central zone that is not used with SHARP.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Removal of Artificially Generated Polarization in SHARP Maps

Attard

Houde

Novak

et al. 2008

PUBL ASTRON SOC PAC

View full text Add to dashboard Cite

We characterize the problem of artificial polarization for the Submillimeter High Angular Resolution Polarimeter (SHARP) through the use of simulated data and observations made at the Caltech Submillimeter Observatory (CSO). These erroneous, artificial polarization signals are introduced into the data through misalignments in the bolometer sub-arrays plus pointing drifts present during the data-taking procedure. An algorithm is outlined here to address this problem and correct for it, provided that one can measure the degree of the sub-array misalignments and telescope pointing drifts. Tests involving simulated sources of Gaussian intensity profile indicate that the level of introduced artificial polarization is highly dependent upon the angular size of the source. Despite this, the correction algorithm is effective at removing up to 60% of the artificial polarization during these tests. The analysis of Jupiter data taken in January 2006 and February 2007 indicates a mean polarization of 1.44%+/-0.04% and 0.95%+/-0.09%, respectively. The application of the correction algorithm yields mean reductions in the polarization of approximately 0.15% and 0.03% for the 2006 and 2007 data sets, respectively.Comment: 19 pages, 7 figure

show abstract

Section: Corrections For Planetary Datamentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%