Pyroelectric IR single-element detectors and arrays based on LiNbO3 and LiTaO3

Details Pyroelectric IR single-element detectors and arrays based on LiNbO3 and LiTaO3 Pyroelectric IR single-element detectors and arrays based on LiNbO3 and LiTaO3

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992spie.1685..155n&link_type=abstract

Proc. SPIE Vol. 1685, p. 155-163, Infrared Detectors and Focal Plane Arrays II, Eustace L. Dereniak; Robert E. Sampson; Eds.

Physics

Scientific paper

Starting from a characterization of the used pyroelectric materials LiNbO(subscript 3) and LiTaO(subscript 3) the paper describes the hybrid arrangement and essential properties of realized single- element detectors and arrays. It shows that the design and the production technique of pyroelectric chips have a strong influence on the thermal and spatial resolution of the detectors. This technique includes both the thinning process and reticulation of the chips, for which ion beam milling as a universal method was optimized and used. Single-element detectors with extremely thin, self-supporting LiTaO(subscript 3) chips (dp < 2 micrometers ) were produced. With a responsive element of 2 X 2 mm(superscript 2) in area, they have a specific detectivity D(superscript *) (500 K; 10 Hz; 25 degree(s)C) > 1 X 10(superscript 9) cmHz(superscript 1/2)W(superscript -1). Linear arrays with 128 responsive elements of 90 X 100 micrometers (superscript 2) element size, 100 micrometers pitch, integrated readout circuit, and coated germanium window have a noise equivalent power (NEP) (500 K; 40 Hz; 25 degree(s)C) of 4 nW. The modulation transfer function MTF(subscript S) (40 Hz; 31 p/mm; 25 degree(s)C) is 0.15 for pyroelectric chips without isolating grooves and was increased up to 0.45 by means of ion- beam milling of 10 micrometers wide isolating grooves between the responsive elements. First results of two-dimensional arrays with 128 X 128 elements, of 50 micrometers pitch and integrated CCD-readout circuit are presented.

Affiliated with

Also associated with

No associations

Rating

Pyroelectric IR single-element detectors and arrays based on LiNbO3 and LiTaO3 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Pyroelectric IR single-element detectors and arrays based on LiNbO3 and LiTaO3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pyroelectric IR single-element detectors and arrays based on LiNbO3 and LiTaO3 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1093095