Interferential filters

Interferential filters (IF) are band pass filters with a narrow transmission window at a given wavelength.

1/2-inch IF filters

We have 4 boxes of 0.5" interferential filters covering 297 to 950 nm (bandwidth 10nm), except for the 780-890 nm region. They are primarily aimed for TCSPC experiments but can be used for any other purpose at the Cryobench thanks to a 1"->1/2" converter.

Available filters of this type (bandwidth 10 nm):
297, 430, 440, 450, 460, 470, 480, 490, 500, 510, 520, 530, 540, 550, 560, 570, 580, 590, 600, 610, 620, 630, 640, 650, 660, 670, 680, 690, 700, 710, 720, 730, 740, 750, 760, 770, 900, 950

1-inch IF filters

We also have one box of 1-inch interferential filters covering 322 to 750 nm with, described in the table below.

type
size
wavelength
bandwidth
interference
1" circular
322 nm
 
interference
1" circular
339 nm
16 nm
interference
1" circular
348.5 nm
16 nm
interference
1" circular
350 nm
 
interference
1" circular
455 nm
40 nm
interference
1" circular
502 nm
46 nm
interference
1" circular
505 nm
71 nm
interference
1" circular
599 nm
70 nm
interference
1" circular
601 nm
70 nm
interference
1" circular
750 nm
 
interference
1" circular
??? nm
 

 

type
size
wavelength
bandwidth
interference
50 mm square
401 nm
390-415 nm, 40%

 

 

Band pass filters

 

Only light within a given range of wavelengths is transmitted.

type
size
wavelengths
band pass
1" circular
385-450 nm
band pass
1" circular
440-510 nm
band pass
1" circular
220-400 nm
long pass 680 nm

 

type
size
wavelengths
band pass
50 mm square
280-360 nm
band pass
50 mm square
300-380 nm
band pass
50 mm square
350-650 nm
band pass
50 mm square
480-550 nm

 

 

Long pass filters

 

Long pass (LP) filters transmit only light above a given wavelength. They are generally used to absorb the reflection of an excitation laser.
We have LP filters covering the range 280-665 nm, as described in the following table.

type
size
wavelength
long pass 1" circular
270 nm
long pass 1" circular
280 nm
long pass 1" circular
315 nm
long pass 1" circular
340 nm
long pass 1" circular
350 nm
long pass 1" circular
375 nm
long pass 1" circular
395 nm
long pass 1" circular
420 nm
long pass 1" circular
435 nm
long pass 1" circular (broken)
435 nm
long pass 1" circular
450 nm
long pass 1" circular
500 nm
long pass 1" circular
550 nm
long pass 1" circular
680 nm / 220-400 nm (??)

 

type
size
wavelength
long pass 50 mm square
550 nm
long pass 50 mm square
665 nm

 

 

Neutral filters

 

1-inch neutral (metal-silica) filters

We have one box of 1" circular neutral metallic-silica filters for the UV-visible range, with the following ODs:
0.03, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.8, 1.0, 1.5, 2.0

1-inch neutral filters

We also have big (50 mm) square or 1" circular neutral-fumed OD filters, as described in the following table.

type
size
OD
gray
50 mm square
1% transmission
gray
50 mm square
5% transmission
gray
50 mm square
10% transmission
gray
50 mm square
30% transmission
gray
50 mm square
60% transmission
gray
50 mm square
80% transmission

 

type
size
OD
gray
1" circular
OD 0.1
gray
1" circular
OD 0.4
gray
1" circular
OD 1.0
gray
1" circular
OD 2.0
gray
1" circular
OD 2.0
gray
1" circular
OD 3.0
gray
1" circular
OD 4.0
gray
1" circular
OD 1.6 @1060nm
gray
1" circular
OD 2.3 @1060nm