Page 243 - Chalcogenide Glasses for Infrared Optics

AMI Infrar ed Crystalline Materials 219

FIGURE 9.7 Plate no. 65 still in the furnace and after being lapped.

7
Room temperature resistivity: 2.74 × 10 Ω·cm
10
Liquid nitrogen resistivity: > 10 Ω·cm
2
Carrier mobility (+): 51 cm /(V·s)
Carrier concentration: 4.5 × 10 9
Detected impurities: Cr, Mg, Si, Na, K at < 1 ppm level
6
Inclusions (Te) concentration: 5.8 × 10 /cm 3
Diameter of inclusions: 7 µm
Infrared free carrier absorption 2–25 µm
not detected:

TABLE 9.1 Material Evaluation Results