PYROELECTRIC DETECTOR

• US 3,733,499 A
• Filed: 04/20/1972
• Issued: 05/15/1973
• Est. Priority Date: 04/20/1972
• Status: Expired due to Term

• Current Assignee: Daniel W. Deis, George W. Roland
• Original Assignee: Daniel W. Deis, George W. Roland
• Inventors: Roland, George W., Deis, Daniel W.
• Primary Examiner(s): Duggan, D. F.
• Application Number:
  US05/246,008
• Time in Patent Office: 390 Days
• Field of Search: 310/4,9.4,9.5 338/18 317/241 423/508 250/83.3H
• US Class Current: 310/306
• CPC Class Codes: G02F 2/00 Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light G02F1/35 takes precedence
• CPC Class Codes: H10N 15/15 Selection of materials

Abstract

A pyroelectric detector is disclosed which comprises a crystal of T13AsSe3 having two opposing faces with an electrically conducting electrode contacting each face. The detector is connected to an amplifier, the output of which can be displayed on an oscilloscope or otherwise displayed or utilized electronically. The detector has superior electrical properties and can detect any form of radiation which increases the temperature of the crystal.

Claims

2. A detector according to claim 1 wherein said faces are perpendicular to said c-axis.

3. A detector accordIng to claim 1 which also has an optical face.

4. A detector according to claim 1 wherein at least one of said electrodes is transparent.

5. A detector according to claim 1 wherein at least one of said electrodes is radiation-absorbent.

6. A detector according to claim 1 wherein at least one of said electrodes is coated with a radiation absorbing material.

7. A detector according to claim 1 wherein said crystal is larger than 50 Mu m square by 10 Mu m thick and smaller than 1 cm square by 5 cm long.

8. A detector according to claim 1 wherein said electrodes are metal films less than 2000 A thick.

9. A detector according to claim 1 including means connected to said electrodes for amplifying a signal generated in said detector.

10. A detector according to claim 9 including means for displaying said amplified signal.