Table 2.

Technical specifications of the three different Raman systems evaluated in this report.

	Device 1	Device 2	Device 3
Sensor	BI	BI	BI LDC-DD
Active px	$1024\times 58$	$1340\times 400$	$2000\times 256$
Pixel size	$24\mu \mathrm{m}$	$20\mu \mathrm{m}$	$15\mu \mathrm{m}$
Sensitivity	$27{\mathrm{e}}^{-}/\mathrm{ct}$	$1{\mathrm{e}}^{-}/\mathrm{ct}$	$1.5{\mathrm{e}}^{-}/\mathrm{ct}$
QE at 800 nm	80%	$\sim 72\%$	95%
f/#	4	3.9	2.2
Relative cost	$	$$$$	$$
Size ($L\times W\times H$)	182 mm × 110 mm × 47 mm (integrated CCD sensor)	368 mm × 254 mm × 211 mm (without camera)	280 mm × 246 mm × 142 mm (without camera)
Spectral range	Fixed grating: 599 to 984 nm	Motorized grating: 65 nm coverage	Fixed grating: 807 to 940 nm

BI = back illuminated, LDC = low dark current, DD = deep depletion.