Abstract

This paper corrects a definitional error in the previous paper on this topic and reports a considerably better dielectric material for this type of detector (i.e., <i>d I n</i> ε/<i>d T</i> values as large as 30% K<sup>-1</sup> in the range 0.3 to 10 K). Computed responsivity (times the square root of the detector area) based on this material varies from 6 × 10<sup>6</sup> to 2 × 10<sup>4</sup> V⋅W<sup>-1</sup> cm for reservoir temperatures between 0.3 and 10 K. The corresponding variation of the detectivity is from 2 × 10<sup>14</sup> to 1 × 10<sup>11</sup> cm ⋅ W<sup>-1</sup> ⋅ Hz<sup>½</sup>.

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  1. W. N. Lawless, J. Opt. Soc. Am. 62, 1449 (1972).
  2. W. N. Lawless, Rev. Sci. Instr. 42, 561 (1971); W. N. Lawless, R. Radebaugh, and R. J. Soulen, Rev. Sci. Instr. 42, 567 (1971).
  3. Note that the capacitance C in Eq. (3) does not depend on the detector area but rather on the arrangement of the electrodes on that area.
  4. See Refs. 2 for the experimental methods for these measurements.
  5. R. C. Zeller and R. O. Pohl, Phys. Rev. B 4, 2029 (1971).
  6. These three refinements were ignored in arriving at x*. The reason for discussing x* was to arrive at the high-temperature restriction on T0; at the higher temperature, the refinements are not important.
  7. Strictly speaking, α was assumed temperature independent between T0 and TB, in solving the heat-balance differential equation (Ref. 1). The maximization scheme here involves a at TB, which has the effect of slightly overestimating (≲1%) rA½ below 1 K and underestimating rA½ above 1 K.
  8. The corresponding Eq. (2) in Ref. 1 contains errors, in that the resistance R is missing from the first term and the bandwidth Δƒc should be deleted from all three terms.
  9. L. G. Rubin and W. N. Lawless, Rev. Sci. Instr. 42, 571 (1971).

Lawless, W. N.

W. N. Lawless, Rev. Sci. Instr. 42, 561 (1971); W. N. Lawless, R. Radebaugh, and R. J. Soulen, Rev. Sci. Instr. 42, 567 (1971).

Lawless, W. N.

W. N. Lawless, J. Opt. Soc. Am. 62, 1449 (1972).

L. G. Rubin and W. N. Lawless, Rev. Sci. Instr. 42, 571 (1971).

Pohl, R. O.

R. C. Zeller and R. O. Pohl, Phys. Rev. B 4, 2029 (1971).

Rubin, L. G.

L. G. Rubin and W. N. Lawless, Rev. Sci. Instr. 42, 571 (1971).

Zeller, R. C.

R. C. Zeller and R. O. Pohl, Phys. Rev. B 4, 2029 (1971).

Other

W. N. Lawless, J. Opt. Soc. Am. 62, 1449 (1972).

W. N. Lawless, Rev. Sci. Instr. 42, 561 (1971); W. N. Lawless, R. Radebaugh, and R. J. Soulen, Rev. Sci. Instr. 42, 567 (1971).

Note that the capacitance C in Eq. (3) does not depend on the detector area but rather on the arrangement of the electrodes on that area.

See Refs. 2 for the experimental methods for these measurements.

R. C. Zeller and R. O. Pohl, Phys. Rev. B 4, 2029 (1971).

These three refinements were ignored in arriving at x*. The reason for discussing x* was to arrive at the high-temperature restriction on T0; at the higher temperature, the refinements are not important.

Strictly speaking, α was assumed temperature independent between T0 and TB, in solving the heat-balance differential equation (Ref. 1). The maximization scheme here involves a at TB, which has the effect of slightly overestimating (≲1%) rA½ below 1 K and underestimating rA½ above 1 K.

The corresponding Eq. (2) in Ref. 1 contains errors, in that the resistance R is missing from the first term and the bandwidth Δƒc should be deleted from all three terms.

L. G. Rubin and W. N. Lawless, Rev. Sci. Instr. 42, 571 (1971).

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