Table 7.

Change in refractive index, (Δn), as a function of temperature at 587.6 nm

Temperature °C	Fused SiO2	Calcium aluminate glass F75	Phosphate glass F1329	Barium borate glass E1583	Germanate glass F998
−200	−11.8 × 10−4	−9.3 × 10−4	−6.1 × 10−4	4.6 × 10−4	−10.0 × 10−4
−190	−11.6	−9.1	−6.0	4.2	−9.8
−180	−11.3	−8.8	−5.8	3.9	−9.6
−170	−11.0	−8.6	−5.5	3.6	−9.4
−160	−10.7	−8.3	−5.3	3.3	−9.1
−150	−10.3	−7.9	−5.1	3.1	−8.7
−140	−9.8	−7.6	−4.8	2.8	−8.4
−130	−9.3	−7.2	−4.6	2.5	−8.0
−120	−8.8	−6.8	−4.3	2.3	−7.5
−110	−8.2	−6.4	−4.0	2.0	−7.1
−100	−7.6	−5.9	−3.7	1.8	−6.6
−90	−6.9	−5.4	−3.4	1.6	−6.0
−80	−6.2	−4.9	−3.1	1.4	−5.5
−70	−5.5	−4.4	−2.7	1.2	−4.9
−60	−4.8	−3.8	−2.4	1.0	−4.3
−50	−4.0	−3.2	−2.0	0.8	−3.6
−40	−3.2×10−4	−2.6×10−4	−1.6×10−4	0.6×10-4	−3.0×10−4
−30	−2.4	−2.0	−1.2	0.4	−2.3
−20	−1.6	−1.4	−0.8	0.3	−1.5
−10	−0.8	−0.7	−0.4	0.1	−0.8
0	0.0	0.0	0.0	0.0	0
10	0.9	0.7	0.4	−0.1	0.8
20	1.7	1.4	0.9	−0.3	1.6
30	2.5	2.2	1.3	−0.4	2.5
40	3.4	3.0	1.8	−0.5	3.4
50	4.3	3.7	2.3	−0.5	4.3
60	5.3	4.5	2.8	−0.6	5.2
70	6.2	5.4	3.3	−0.7	6.2
80	7.2	6.2	3.8	−0.8	7.1
90	8.2	7.1	4.4	−0.8	8.1
100	9.2	7.9	4.9	−0.9	9.1
110	10.2	8.8	5.5	−0.9	10.2
120	11.2	9.7	6.1	−0.9	11.2
130	12.3	10.6	6.6	−0.9	12.3
140	13.3	11.6	7.2	−0.9	13.4
150	14.4	12.5	7.9	−0.9	14.5
160	15.5	13.5	8.5	−0.9	15.6
170	16.6	14.5	9.1	−0.9	16.8
180	17.8	15.4	9.8	−0.9	17.9
190	18.9	16.4	10.4	−0.8	19.1
200	20.1	17.4	11.1	−0.8	20.3
210	21.2	18.5	11.8	−0.7	21.5
220	22.4	19.5	12.5	−0.6	22.7
230	23.6	20.5	13.2	−0.5	24.0
240	24.8	21.6	13.9	−0.5	25.2
250	26.1	22.6	14.6	−0.4	26.5
260	27.3	23.7	15.4	−0.2	27.8
270	28.5	24.8	16.1	−0.1	29.0
280	29.8	25.9	16.9	0.0	30.3
290	31.1	27.0	17.7	0.1	31.7
300	32.4	28.1	18.5	0.3	33.0
310	33.7	29.2	19.3	0.4	34.3
320	35.0	30.3	20.1	0.6	35.6
330	36.3	31.4	20.9	0.8	37.0
340	37.6	32.5	21.8	1.0	38.3
350	38.9	33.6	22.6	1.2	40.0
360	40.3	34.8	23.5	1.4	41.1
370	41.6	35.9	24.4	1.6	42.4
380	43.0	37.0	25.3	1.8	43.8
390	44.4	38.2	26.2	2.0	45.2
400	45.7	39.3	27.1	2.3	46.6
410	47.1	40.5	28.0	2.5	48.0
420	48.5	41.6	29.0	2.8	49.4
430	49.9	42.7	29.9	3.1	50.8
440	51.3	43.9	30.9	3.3	52.2
450	52.7	45.0	31.9	3.6	53.6
460	54.2	46.2	32.9	3.9	55.0
470	55.6	47.3	33.9	4.3	56.4
480	57.0	48.5	34.9	4.6	57.8
490	58.4	49.6	35.9	4.9	59.2
500	59.9	50.7	37.0	5.2	60.6
510	61.3	51.9	38.0		62.0
520	62.8	53.0	39.1		63.4
530	64.2	54.1	40.2		64.8
540	65.7	55.3			66.2
550	67.1	56.4			67.6
560	68.6	57.5			69.0
570	70.0	58.6			70.4
580	71.5	59.7			71.8
590	72.9	60.8			73.1
600	74.4	61.9			74.5
610	75.9				75.9
620	77.3				77.2
630	78.8				78.6
640	80.2				79.9
650	81.7