Kopp - Holmium Calibrating Filter - 3131

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Holmium Calibrating Filter - 3131
 
Note: Graph and tabular data at 2.00 mm
Filter Specifications
Transmission at 279 nm must be between 15.1% and 34.6%
Transmission at 460 nm must be between 3.9% and 12.1%
Physical Properties
Nominal Thickness Range 2.0 - 2.1 mm
Refractive Index nD = 1.51
Density 2.84 g/cm3
Thermal Linear Expansion 100E-7 /ºC (30-300 ºC)
Strain Temperature 450 ºC
Annealing Temperature 492 ºC
Deformation Temperature 691 ºC
Holmium Calibrating Filter - 3131
Wavelength
Transmission
Wavelength
Transmission
Wavelength
Transmission
(nm)
(%)
(nm)
(%)
(nm)
(%)
200
0.00
435
87.16
670
89.89
205
0.00
440
72.95
675
91.22
210
0.00
445
1.21
680
91.41
215
0.00
450
24.04
685
91.34
220
0.00
455
22.32
690
91.42
225
0.00
460
11.40
695
91.41
230
0.00
465
58.13
700
91.22
235
0.00
470
79.09
705
91.52
240
0.07
475
78.28
710
91.41
245
0.69
480
84.60
715
91.37
250
2.11
485
76.88
720
91.30
255
4.88
490
81.19
725
91.29
260
8.09
495
89.33
730
91.28
265
13.41
500
91.17
735
91.16
270
19.47
505
91.25
740
91.14
275
25.42
510
91.08
745
91.09
280
26.64
515
91.17
750
91.05
285
41.17
520
90.86
755
91.06
290
41.10
525
89.60
760
91.27
295
56.05
530
83.08
765
91.06
300
66.05
535
49.50
770
91.07
305
72.12
540
63.60
775
91.16
310
76.48
545
75.53
780
91.10
315
79.89
550
82.82
785
91.01
320
82.34
555
89.40
790
91.21
325
84.29
560
91.33
795
91.12
330
84.16
565
91.42
800
91.11
335
78.77
570
91.43
805
91.10
340
84.34
575
91.43
810
91.30
345
82.25
580
91.44
815
91.14
350
84.16
585
91.35
820
91.17
355
84.07
590
91.46
825
91.18
360
24.55
595
91.34
830
91.14
365
67.97
600
91.18
835
91.24
370
84.58
605
91.20
840
91.17
375
90.42
610
91.29
845
91.14
380
86.64
615
91.15
850
91.43
385
83.22
620
90.75
855
91.08
390
88.71
625
89.47
860
91.43
395
90.82
630
84.46
865
90.82
400
90.86
635
70.10
870
90.53
405
90.80
640
70.96
875
90.81
410
88.55
645
75.74
880
90.03
415
76.92
650
75.86
885
91.96
420
69.23
655
83.46
890
90.33
425
79.41
660
82.52
895
91.44
430
88.37
665
83.84
900
89.85
           


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