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Cleaning Filters

In the fast growing category of applications and instrumentation which utilise laser sources—such as Raman Spectroscopy, Confocal and Multiphoton Microscopy, and Flow Cytometry—it is critical to eliminate all unwanted laser background, scatter, and plasma in order to optimise signal-to-noise. Laser line and shortpass edge filters can be used to “clean-up” the signal at the laser source. Longpass edge and laser rejection filters can be used for “rejecting” unwanted noise at the detector. A combination of laser filter solutions can provide performance superior to Holographic Notch filters at significantly less cost.

Laser Line Interference Filters

These filters pass a limited band centered on the resonance of the laser and attenuate the background plasma and secondary emissions that often result in erroneous signals. In the case of diode lasers, these filters can be used to make the light output more monochromatic. Laser line filters provide 70 - 90% throughput with spectral control from 0.85 10 1.15 of the CWL. An accessory blocker can be ordered to control a much wider spectral range from the deep UV to the IR. This additional blocker results in a minor (20%) loss of throughput

Part Number

Descriptor

Laser
Line

Size (mm)

Typical min
T @ l*

CWL
Tol.

FWHM
Tol. (+/-)

Blocking
Range

 

Part Number
Full Blocking

Additional
Blocking
Full

XL01

266BP15

4th Nd Yag

25mm

20%

+2.2nm
-1.5nm

 0.3nm

UV - FIR

 

None Required

None Required

XL02

325NB2

HeCd

25mm

25%

+0.3nm
-0.2nm

 0.4nm

0.9 x CWL - 1.1 X CWL

 

XLK02

UV-2500nm

XL03

355NB3

3rd Nd Yag

25mm

60%

+0.4nm
-0.3nm

 0.6nm

0.9 x CWL - 1.1 X CWL

 

XLK03

UV-2500nm

XL04

442NB2

HeCd

25mm

60%

+0.3nm
-0.2nm

 0.4nm

0.85 X CWL -
1.15 x CWL

 

XLK04

UV-2500nm

XL05

457NB2

Argon

25mm

60%

+0.3nm
-0.2nm

 0.4nm

0.85 X CWL -
1.15 x CWL

 

XLK05

UV-2500nm

XL06

488NB3

Argon

25mm

80%

+0.4nm
-0.3nm

 0.6nm

0.85 X CWL -
1.15 x CWL

 

XLK06

UV-2500nm

XL07

515NB3

Argon

25mm

80%

+0.4nm
-0.3nm

 0.6nm

0.85 X CWL -
1.15 x CWL

 

XLK07

UV-1500nm

XL08

532NB3

2nd Nd Yag

25mm

80%

+0.4nm
-0.3nm

 0.6nm

0.85 X CWL -
1.15 x CWL

 

XLK08

UV-1500nm

XL09

543NB3

HeNe Green

25mm

80%

+0.4nm
-0.3nm

 0.6nm

0.85 X CWL -
1.15 x CWL

 

XLK09

UV-1500nm

XL10

594NB3

HeNe Yellow

25mm

80%

+0.4nm
-0.3nm

 0.6nm

0.85 X CWL -
1.15 x CWL

 

XLK10

UV-1150nm

XL11

612NB3

HeNe Yellow

25mm

80%

+0.4nm
-0.3nm

 0.6nm

0.85 X CWL -
1.15 x CWL

 

XLK11

UV-1150nm

XL12

633NB4

HeNe Red

25mm

80%

+0.6nm
-0.4nm

 0.8nm

0.85 X CWL -
1.15 x CWL

 

XLK12

UV-1150nm

XL13

647NB4

Krypton

25mm

80%

+0.6nm
-0.4nm

 0.8nm

0.85 X CWL -
1.15 x CWL

 

XLK13

UV-1150nm

XL14

676NB4

Krypton

25mm

80%

+0.6nm
-0.4nm

 0.8nm

0.85 X CWL -
1.15 x CWL

 

XLK14

UV-1150nm

XL15

665WB25

AlGaAs

25mm

80%

+3.7nm
-2.5nm

 5nm

0.85 X CWL -
1.15 x CWL

 

XLK15

UV-1150nm

XL16

694NB4

Ruby

25mm

80%

+0.6nm
-0.4nm

 0.8nm

0.85 X CWL -
1.15 x CWL

 

XLK16

UV-1150nm

XL17

775WB25

AlGaAs

25mm

85%

+3.7nm
-2.5nm

 5nm

0.85 X CWL -
1.15 x CWL

 

XLK17

UV-2500nm

XL18

825WB25

AlGaAs

25mm

85%

+3.7nm
-2.5nm

 5nm

0.85 X CWL -
1.15 x CWL

 

XLK18

UV-2500nm

XL19

850WB25

AlGaAs

25mm

85%

+3.7nm
-2.5nm

 5nm

0.85 X CWL -
1.15 x CWL

 

XLK19

UV-2500nm

XL20

875WB25

AlGaAs

25mm

85%

+3.7nm
-2.5nm

 5 nm

0.85 X CWL -
1.15 x CWL

 

XLK20

UV-2500nm

XL21

1060NB8

1st Nd Yag

25mm

85%

+1.2nm
-0.8nm

 1.6nm

0.85 X CWL -
1.15 x CWL

 

XLK21

UV-1500nm

XL22

1064NB8

1st Nd Yag

25mm

80%

+1.2nm
-0.8nm

 1.6nm

0.85 X CWL -
1.15 x CWL

 

XLK22

UV-1500nm

XL23

1152NB10

HeNe IR

25mm

80%

+1.5nm
-1nm

 2nm

0.85 X CWL -
1.15 x CWL

 

XLK23

UV-1350nm

XL24

1310WB40

InGaAsP

25mm

80%

+6nm
-4nm

 8nm

0.85 X CWL -
1.15 x CWL

 

XLK24

UV-1800nm

XL25

1320NB10

Nd Yag

25mm

80%

+1.5nm
-1nm

 2nm

0.85 X CWL -
1.15 x CWL

 

XLK25

UV-1800nm

XL26

1523NB10

HeNe IR

25mm

80%

+1.5nm
-1nm

 2nm

0.85 X CWL -
1.15 x CWL

 

XLK26

UV-1800nm

XL27

1550WB50

InGaAsP

25mm

80%

+7.5nm
-5nm

 10nm

0.85 X CWL -
1.15 x CWL

 

XLK27

UV-1800nm

XL28

1550NB10

InGaAsP

25mm

80%

+1.5nm
-1nm

 2nm

0.85 X CWL -
1.15 x CWL

 

XLK28

UV-1800nm

Specifications:
Diameter Tolerance +0, - 0.5mm
Thickness: 3.5mm
Thickness with Blocking: < 8mm
Average Blocking: OD 5
Minimum Blocking: OD 3
* T value for filter component; Addition of blocking component will reduce T by ~ 20%.

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