Beginning in undergraduate college, I've attempted to collate available data on materials whenever it was relevant to a project.  Many projects later, I compiled this into a table of optical materials properties, and I've recently parsed this information into a series of tables.  These data are neither complete nor completely correct, but I have found them useful in the intitial "brainstorming" phases of design projects. I do NOT sell optical materials!

IR Materials Tables:
• Table 1: Families and names of transmissive optical materials
• Table II. Optical Characteristics of transmissive optical materials
• Table III. Mechanical properties of transmissive optical materials
• Table IV. Thermal properties of transmissive optical materials
• Table V. Chemical properties of transmissive optical materials
• Table VI. Properties of some reflective metals