Table I. Families and names of transmissive optical materials

Family	Material	Other names	Symbol
Alkali halides (salts)	Sodium chloride	rocksalt, halite	NaCl
|	Potassium chloride	sylvite	KCl
|	Potassium bromide		KBr
|	Cesium bromide	cæsium bromide	CsBr
|	Cesium iodide	cæsium iodide	CsI
Metal fluorides	Lithium fluoride		LiF
|	Magnesium fluoride	sellaite, Irtran-1	MgF2
|	Calcium fluoride	fluorspar, fluorite, Irtran-3	CaF2
|	Strontium fluoride		SrF2
|	Barium fluoride		BaF2
Heavy metal halides	Silver chloride	cerargyrite, chlorargyrite, hornsilver	AgCl
|	Silver bromide	bromyrite	AgBr
|	Thallium bromochloride	KRS-6, Tl(Br,Cl), TlBr.4Cl.6	KRS-6
|	Thallium bromoiodide	KRS-5, Tl(Br,I), TlBr.42I.58	KRS-5
Metal oxides	Magnesium oxide	Irtran-5, crystalline magnesia	MgO
|	Sapphire	a -alumina, sapphire, corundum	a Al2O3
|	Crystal quartz	a-quartz, rock crystal, silicon dioxide	a SiO2
|	Zirconia	cubic zirconia (Hf-doped)	ZrO2
II-VI chalcogenides	Zinc sulfide	b -ZnS, sphalerite, Irtran-2, Cleartran	ZnS
|	Zinc selenide	Irtran-4	ZnSe
|	Cadmium sulfide	greenockite	CdS
|	Cadmium selenide	cadmoselite	CdSe
|	Cadmium telluride	Irtran-6	CdTe
Groups IV & III-V	Diamond	(type IIa)	C
|	Silicon	FZ-Si (undoped vacuum-grown float-zone)	Si
|	Germanium		Ge
|	Gallium arsenide		GaAs
Glasses	Silica glasses	fused quartz, vitreous quartz, Vycor	vSiO2
|	Borosilicate glasses	Pyrex, BK-7, LEBG	BSCG
|	Fluorozirconate glass	ZBLAN, HMFG	HMFG
|	Arsenic trisulfide glass	orpiment glass	As2S3
|	AMTIR-1 glass	Ge33As12Se55 chalcogenide	AMTIR
|	GASIR1 glass	Ge22As20Se58 chalcogenide	GASIR1
|	GASIR2 glass	Ge22Sb15Se65 chalcogenide	GASIR2
Plastics	Poly-ethylene	(usually, high-density) poly, polythene	HDPE
|	Poly-methylpentene	TPX, PMP	TPX
|	Polyester	PET, PETG, Mylar, Melinex	PET
|	Poly-tetrafluoroethylene	Teflon TFE, PTFE	PTFE
|	Fluorinated EPC	Teflon FEP, TFE/HFP	FEPC

Names were selected on the basis of their descriptive value and common use; the names in parenthesis include the commonest tradenames.
Due to space limitations, many material names are vulgar: some "proper" names such as poly-(4-methyl-pent-1-ene) and poly-(ethylene terephthalate) have been truncated, and lengthy designations such as fluorinated ethylene-propylene copolymer and tetrafluoroethylene-hexafluoropropylene copolymer have been omitted.
Symbols are for convenience; they are mostly chemical formulæ but also include some common designators for nonstochiometric materials.
Trademarks include Kodak's Irtran, Amorphous Materials' AMTIR, Umicore's GASIR, CVD's Cleartran, Corning's Pyrex & Vycor, MItsui's TPX, and Dupont's Teflon, Melinex, & Mylar.
These data were collected from a variety of sources, so this table probably contains errors. Use cautiously, and empirically verify critical values.
©2002 by D.W.Vidrine  « Author will not accept responsibility for any harm resulting from the use of this data! »
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