Peltier cooled LWIR lateral effect position sensitive HgCdTe photodetector

Pawluczyk, J.; Żbik, Mateusz; Piotrowski, J.

doi:10.1117/12.2610769

Cited by 1 publication

(14 citation statements)

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“…The lateral-effect position-sensitive Peltier-cooled LWIR detector was recently demonstrated [ 20 ] for the first time to the authors’ knowledge and described in more detail here. It was based on a modified PIN HgCdTe photodiode with a spectral sensitivity range of 3–11 μm, forming the tetra-lateral PSD with a photosensitive area of 1 × 1 mm 2 .…”

Section: Discussionmentioning

confidence: 99%

“… Principle of operation of the PSD tetra-lateral photodiode (adapted with permission from Ref. [ 20 ]; copyright: 2022, SPIE). The photosensitive area is in grey.…”

Section: Figurementioning

confidence: 99%

“… Detector package (adapted with permission from Ref. [ 20 ]; copyright: 2022, SPIE): ( a ) the hermetic housing of the TL-PSD chip; ( b ) the TL-PSD chip on the four-stage Peltier cooler cold finger; ( c ) the TL-PSD detector integrated with the electronics package, and a spatial orientation of the cathode electrodes of the signal channels A, B, C, and D is also shown. …”

Section: Figurementioning

confidence: 99%

“…Assuming perfect position linearity, the transverse position (X, Y) of the light spot gravity center is determined by subtracting the signals from the opposite cathode electrodes (channels) and dividing this difference by the sum of these signals (adapted with permission from Ref. [ 20 ]; copyright: 2022, SPIE):

where X PSD and Y PSD are the Cartesian coordinates of the radiation beam spot position determined from the TL-PSD signals, i.e., the U A , U B , U C , and U D voltages at respective channel preamplifier outputs. The preamplifiers integrate the photocurrent, giving the output voltage proportional to the input radiation pulse energy.…”

Section: Introductionmentioning

confidence: 99%

“…The position resolution can be assessed using the standard deviations

and

of the position coordinates X PSD and Y PSD , respectively (adapted with permission from Ref. [ 20 ]; copyright: 2022, SPIE):

where

, and

are the root-mean-square (rms) noises at the respective channel outputs. It is assumed that the noises from the individual channels are uncorrelated with each other.…”

Section: Introductionmentioning

confidence: 99%

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LWIR Lateral Effect Position Sensitive HgCdTe Photodetector at 205 K

Pawluczyk

Żbik

Piotrowski

2023

Sensors

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We describe in detail the construction and characterization of a Peltier-cooled long-wavelength infrared (LWIR) position-sensitive detector (PSD) based on the lateral effect. The device was recently reported for the first time to the authors’ knowledge. It is a modified PIN HgCdTe photodiode, forming the tetra-lateral PSD, with a photosensitive area of 1 × 1 mm2, operating at 205 K in the 3–11 µm spectral range, capable of achieving a position resolution of 0.3–0.6 µm using 10.5 µm 2.6 mW radiation focused on a spot of the 1/e2 diameter 240 µm, with a box-car integration time of 1 µs and correlated double sampling.

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Section: Discussionmentioning

confidence: 99%

“… Principle of operation of the PSD tetra-lateral photodiode (adapted with permission from Ref. [ 20 ]; copyright: 2022, SPIE). The photosensitive area is in grey.…”

Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The position resolution can be assessed using the standard deviations

and

of the position coordinates X PSD and Y PSD , respectively (adapted with permission from Ref. [ 20 ]; copyright: 2022, SPIE):

where

, and

are the root-mean-square (rms) noises at the respective channel outputs. It is assumed that the noises from the individual channels are uncorrelated with each other.…”

Section: Introductionmentioning

confidence: 99%

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