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