HgCdTe (MCT) Four-Channel Detection Module4EM-5

3.5 – 6.0 µm, DC – 1 MHz, with photovoltaic four-element linear detector

4EM-5 is „all-in-one” IR multi channel detection module. Thermoelectrically cooled photovoltaic four-element linear detector, based on HgCdTe heterostructure, is integrated with transimpedance, DC coupled four-channel preamplifier, a fan and a thermoelectric cooler controller in a compact housing.

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Features

Four channels

Low crosstalk

Single power supply

Compatible with optical accessories

Applications

Contactless temperature measurements (railway transport, industrial and laboratory processes monitoring)

Spectrophotometry

MWIR laser measurements

Laser power monitoring and control

Laser beam profiling

Laser calibration

Specification (T_a = 20°C)

Parameter	Typical value
Optical parameters
Cut-on wavelength λ_cut-on (10%) µm	3.5±0.5
Peak wavelength λ_peak, µm	4.5±0.5
Optimum wavelength λ_opt, µm	5.0
Cut-off wavelength λ_cut-off (10%) µm	6.0±0.5
*Detectivity D(λ_peak), cm⋅Hz^1/2/W**	≥1.4×10⁹
*Detectivity D(λ_opt), cm⋅Hz^1/2/W**	≥1.2×10⁹
Output noise density v_n(100 kHz), nV/Hz^1/2	≤500
Electrical parameters
*Voltage responsivity R_v(λ_peak, R = 1 MΩ^)), V/W**	≥1.7×10⁵
*Voltage responsivity R_v(λ_opt, R = 1 MΩ^)), V/W**	≥1.6×10⁵
Low cut-off frequency f_lo, Hz	DC
High cut-off frequency f_hi, Hz	≥1M
Output impedance R_out, Ω	50
*Output voltage swing V_out(R = 1 MΩ^)), V**	0 - 4
Output voltage offset V_off, V	max ±20
Power supply voltage V_sup, V	+7.5
Power consumption, W	max 6
Other information
Active elements material	epitaxial HgCdTe heterostructure
Active areas A, mm×mm	4×(0.2×0.2)
Distance between active elements, mm	0.05
Window	pSiAR
Acceptance angle, Φ	~70°
Ambient operating temperature T_a, °C	10 to 30
Signal output sockets	4×MCX
Power supply socket	DC 2.1/5.5
Mounting hole	M4
Fan	yes
^*) R_L – load resistance