Shanghai Laser & Optics Century Co., Ltd. (SLOC) | Laser | Manufacturer of DPSS Green Laser, Blue Laser, Red Laser, Yellow Laser, Infrared Laser, UV Laser | 635nm and 650nm Laser Modules | Laser Diode | Scanner, Line Lens, Combiner, Beamsplitter, Filter, Rod Lens, Ball Lens | Fiber Coupled, RGB Laser, Low Noise, SLM, Line Laser, Laser Pointer, Portable Laser

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Raman Filter

Feature

High Transmission to Detect the Weakest Signals
Ultra-steep Edge to Measure Even the Smallest Raman Shifts
Deep Blocking for Maximum Laser Rejection
Hard Coatings and No Adhesives for Long Filter Life
All Dielectric Coated with IBS Technology

Filter

Application

Raman Spectroscopy
Confocal Microscopy
Biomedical Instrumentation

532nm filter

Specification
Edge Steepness	0.5% of laser wavelength (typical)	Measured from OD 6 to 50%
Blocking	>6.0 OD	OD = -log₁₀(Transmission)
Transition Width	<1.0% of laser wavelength	Measured from laser wavelength to 50% transmission wavelength
Passband Transmission	>90%	Averaged over the Passband
Angle of Incidence	0.0±2.0°	Range for above optical specifications
Cone Half Angle	<5°
Angle Tuning Range	–0.3% of Laser Wavelength
Laser Damage Threshold	1J/cm2 @ 532nm	10ns pulse width
Substrate	Fused Silica or BK7
Filter Coating Type	"Hard" ion-beam sputtered
Outer Diameter	Φ25.0mm	Black-anodized aluminum ring
Diameter Tolerance	+0/-0.1mm
Clear Aperture	≥ 22mm	For all optical specifications
Overall Thickness	3.5mm	Tolerance ±0.1mm
Suface Quality	60-40 scratch and dig	Measured within Clear Aperture
Beam Deviation	<30 arc sec.
Transmitted Wavefront	< λ/4 RMS at λ=633nm	Peak-to-valley error <5×RMS
Temperature Dependence	<5ppm/℃
Operating Temperature	-45℃ - 85℃
Environmental Durability	MIL-STD-810F
Physical Durability	MIL-C-48497A

Standard Products

Part No.

CWL (λc)

Transition Width

Edge Steepness

Passband

RLF02-325

325.0nm

<3.3nm (305cm^-1)

<1.6nm (153.1cm^-1)

329.2 - 733.1nm

RLF02-355

355.0nm

<3.6nm (279cm^-1)

<1.8nm (140.1cm^-1)

359.6 - 800.8nm

RLF02-364

363.8nm

<3.6nm (272cm^-1)

<1.8nm (136.8cm^-1)

368.5 - 820.6nm

RLF02-441

441.6nm

<4.4nm (224cm^-1)

<2.2nm (112.7cm^-1)

447.3 - 996.1nm

RLF02-457

457.9nm

<4.6nm (216cm^-1

<2.3nm (108.7cm^-1)

463.9 - 668.4nm

RLF02-473

473.0nm

<4.7nm (209cm^-1)

<2.4nm (105.2cm^-1)

479.1 - 1066.9nm

RLF02-488

488.0nm

<4.9nm (203cm^-1)

<2.4nm (101.9cm^-1)

494.3 - 1100.8nm

RLF02-515

514.5nm

<5.1nm (192cm^-1)

<2.6nm (96.7cm^-1)

521.2 - 1160.5nm

RLF02-532

532.0nm

<5.3nm (186cm^-1)

<2.7nm (93.5cm^-1)

538.9 - 1200nm

RLF02-561

561.4nm

<5.6nm (176cm^-1)

<2.8nm (88.6cm^-1)

568.7 - 1266.3nm

RLF02-568

568.2nm

<5.7nm (174cm^-1)

<2.8nm (87.6cm^-1)

575.6 - 1281.7nm

RLF02-633

632.8nm

<6.3nm (156cm^-1)

<3.2nm (78.6cm^-1)

641 - 1427.4nm

RLF02-647

647.1nm

<6.5nm (153cm^-1)

<3.2nm (76.9cm^-1)

655.5 - 1459.6nm

RLF02-664

664.0nm

<6.6nm (149cm^-1)

<3.3nm (74.9cm^-1)

672.6 - 1497.7nm

RLF02-780

780.0nm

<7.8nm (127cm^-1)

<3.9nm (63.8cm^-1)

790.1 - 1759.4nm

RLF02-785

785.0nm

<7.9nm (126cm^-1)

<3.9nm (63.4cm^-1)

795.2 - 1770.7nm

RLF02-808

808.0nm

<8.1nm (123cm^-1)

<4.0nm (61.6cm^-1)

818.5 - 1822.6nm

RLF02-830

830.0nm

<8.3nm (119cm^-1)

<4.2nm (59.9cm^-1)

840.8 - 1872.2nm

RLF02-980

980.0nm

<9.8nm (101cm^-1)

<4.9nm (50.8cm^-1)

992.7 - 2000nm

RLF02-1064

1064.0nm

<10.6nm (93cm^-1)

<5.3nm (46.8cm^-1)

1077.8 - 2000nm

RLF02-1319

1319.0nm

<13.2nm (75cm^-1)

<6.6nm (38cm^-1)

1336.1 - 2000nm