New Type Far IR and THz Schottky Barrier Detectors for Scientific and Civil Application

Table 1

Comparative table of the main parameters of FPAs for astronomy.

FPAs type	Format	Band (μm)	Pitch (μm)	Sensitive zone dimensions (cm)	Working temperature (K)	Rate (MHz)	NEP (W⧵Hz^1/2)	Output noise (e^−)	Dynamic range (dB)	Technology	Cost∖quality ratio
HAWAII-2	2048∗2048	0.8–2.5^†	18.5	4∗4	80–120	0.8	(5–9) * 10^−15 (BLIP)	<7	60	MCT on Si CMOS	Excellent
VLWIR-002	128∗128	8–15.8	60	0.8∗0.8^†	40	5.0	5 * 10^−12 (BLIP)	200	>60	MCT on Si CMOS	Very good
Transition edge Sensor (for S-520-17)	12∗1^†(Double wavelengths)	250–500	1000	1.2^†	0.3^†	Unknown	5 * 10^−17–1 * 10^−16 (BLIP)	Unknown	Very low (up to 1-2 dB)^‡	Superconductor metallic film bolometers	Average
BIB sensors^1 Si(Ga), Si(As), Ge(Ga) (for SIRTF)	256∗256, 32∗32^‡	5–40, 40–70	40–120, 250	1∗1^†	5–15 for Si, 1.3 for Ge^‡	Unknown	Unknown	Unknown	Unknown	Impurity Si or Ge and Si CMOS	Good
Transition edge sensor (TES)^2 (for SOFIA)	2∗32^‡, 12∗32^‡, 16∗32^‡	145–655	500–2000	Up to 7.0	0.065–0.2^‡	Unknown	10^−19–10^−20(**)	Unknown	Very low (up to 1-2 dB)^‡	Superconductor metallic film bolometers and SQUID’s^‡	Below the average^†
Cool electron bolometer^3	Not fixed	40–500	Not fixed	Not fixed	0.1^‡	Not fixed	10^−18(***)	Unknown	10–30^†	Metallic film bolometers and SQUID’s^‡	Good
Hot electron gas emission detectors^4#	100∗100^#, 1000∗1000^#	5–40, 100–500^#	25–1000^#	4∗4 Approx.^#	15–60^#	1–5^#	10^−18 (Shot Noise)^#	Not fixed^#	>60^#	Typical Si SB and Si CMOS^#	Good^#

^†Critical parameters of FPAs for astronomy
^‡The main shortcomings.
^#Parameters of the proposed FPA.
The FPAs with indices 1, 2, and 3 are in different studies of investigation.
^(**)Theoretical estimations.
^(***)Experimental data with one element bolometer.
The FPA with index 4 is the new type of FPA proposed in this paper (protected by Pat. RU no.2304826, no. 2335823).