Table 3: Triple and dual-etalon and prefilter characteristics.
Scanning Scanning Static Prefilter

HRI HRI LRI 4-mirrors

Refractive Index 1.0 1.0 1.0

Aperture (mm) 35 35 35 35

Reflectance 0.790 0.790 0.947 0.950

Order 9001 2571 44

Gap distance ( $\mu$ m) 697 200 3.42

Coating finesse 13 13 59

${\it FSR}$ (nm) 0.017 0.60 3.43

FWHM (pm) 2 10 60 3500

Contrast ratio 73 73 1350

**Table 3:** Triple and dual-etalon and prefilter characteristics.
	Scanning	Scanning	Static	Prefilter
	HRI	HRI	LRI	4-mirrors
Refractive Index	1.0	1.0	1.0
Aperture (mm)	35	35	35	35
Reflectance	0.790	0.790	0.947	0.950
Order	9001	2571	44
Gap distance ( $\mu$ m)	697	200	3.42
Coating finesse	13	13	59
${\it FSR}$ (nm)	0.017	0.60	3.43
FWHM (pm)	2	10	60	3500
Contrast ratio	73	73	1350

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