Table 1: Halfwave plate achromatization for various wavelength ranges from the V band up to the N band. The table summarizes the optimized thicknesses for the chosen doublet materials. The last line gives the total rejection factor.
Filters 500-900 nm (R=1.75) 700-2500 nm (R=0.9) H(R=4.7) K (R=5.5) N (R=4.8)

Couple (a/b) Quartz/MgF₂ CdS/CdSe

$d_{\rm a}$ ( $\mu$ m) 841.1 1488.7 1332.2 1219 1798.1

$d_{\rm b}$ ( $\mu$ m) 674.7 1168 1057.9 977.1 1618.8

$\tau$ (total rejection) 340 260 7900 $1.47\times 10^{5}$ $2.16\times 10^{5}$

**Table 1:** Halfwave plate achromatization for various wavelength ranges from the V band up to the N band. The table summarizes the optimized thicknesses for the chosen doublet materials. The last line gives the total rejection factor.
Filters	500-900 nm (R=1.75)	700-2500 nm (R=0.9)	H(R=4.7)	K (R=5.5)	N (R=4.8)
Couple (a/b)	Quartz/MgF₂	CdS/CdSe
$d_{\rm a}$ ( $\mu$ m)	841.1	1488.7	1332.2	1219	1798.1
$d_{\rm b}$ ( $\mu$ m)	674.7	1168	1057.9	977.1	1618.8
$\tau$ (total rejection)	340	260	7900	$1.47\times 10^{5}$	$2.16\times 10^{5}$

Source LaTeX | All tables | In the text