LBTEK-Your Trusted Partner For Optoelectronic Experiments!

Raman Filters

Center Wavelength: 266 nm-1064 nm
FWHM: 3 nm, 4 nm, 5 nm, 6 nm, 7 nm
Stopband Optical Density: OD5, OD6

LBTEK offers CHROMA Raman Filters with a diameter of 25 mm and mechanical retaining rings. The mechanical retaining rings are marked with arrows indicating the incident direction, with light coming along the arrow direction for easy installation and use. When the incident angle deviates from the designed angle, the center wavelength may shift. It is recommended to use at the designed angle.

The Raman filter is mounted on the coaxial mounting plate.

Product Model	Center wavelength	Full Width at Half Maximum (FWHM)	Passband transmittance	Unit Price	Lead Time
RET785/3x New	785 nm	3 nm	Tabs>90%@785 nm	$717.25	7 weeks
RET633/3x New	633 nm	3 nm	Tabs＞90%@632.8 nm	$717.25	7 weeks
RET532/2x New	532 nm	2 nm	Tabs＞90%@532 nm	$717.25	7 weeks
RET1064/7x	1064 nm	7 nm	Tabs＞90%@1064 nm；	$717.25	Contact
RET830/6x	830 nm	6 nm	Tabs＞93%@830 nm；	$717.25	Contact
RET785/6x	784.5 nm	6 nm	Tabs＞93%@785 nm；	$717.25	Contact
RET633/5x	632.3 nm	5 nm	Tabs＞93%@632.8 nm；	$717.25	Contact
RET532/4x	532 nm	4.5 nm	Tabs＞93%@532 nm；	$717.25	Contact
RET488/4x	487.7 nm	4.2 nm	Tabs＞93%@488 nm；	$717.25	Contact
RET355/3x	355 nm	3 nm	Tabs＞88%@355 nm；	$717.25	Contact
RET266/3x	266 nm	3 nm	Tabs＞55%@266 nm；	$717.25	Contact

Raman long-pass filter

Longpass Filter
Cut-On Wavelength: 270 nm-1072 nm
Outer Diameter 25.0 mm, with Mechanical Retaining Ring
Angle of Incidence: 0°

LBTEK Raman long-pass filters include two types: low wavenumber Raman long-pass filters and conventional Raman long-pass filters. They are optical filters that allow light with wavelengths longer than a specific wavelength to pass through. They exhibit high transmittance (Tavg > 90%) for light longer than the starting (cut-off) wavelength and high blocking depth (ODavg > 6) for light shorter than the starting (cut-off) wavelength. The filters are pre-installed in Ø25.0 mm black anodized aluminum rings, with the light propagation direction marked by an arrow on the housing for easy installation and use. Raman long-pass filters are recommended for use at an incident angle of 0°. When used at incident angles deviating from the design angle, the starting (cut-off) wavelength may shift.

Raman long-pass filter installed on the coaxial mounting plate

Product Model	Start (Stop) Wavelength	Base material	Diameter	Unit Price	Lead Time
RET1072LP New	1072 nm	UV fused silica	Ø25.0 mm	$717.25	7 weeks
RET837LP New	837 nm	UV fused silica	Ø25.0 mm	$717.25	7 weeks
RET792LP New	792 nm	UV fused silica	Ø25.0 mm	$717.25	7 weeks
RET638LP New	638 nm	UV fused silica	Ø25.0 mm	$717.25	7 weeks
RET493LP New	493 nm	UV fused silica	Ø25.0 mm	$717.25	7 weeks
RET359LP New	359 nm	UV fused silica	Ø25.0 mm	$717.25	7 weeks
RET270LP New	270 nm	UV fused silica	Ø25.0 mm	$717.25	7 weeks
RET787LP-X New	787 nm	UV fused silica	Ø25.0 mm	$1074.95	7 weeks
RET634LP-X New	634 nm	UV fused silica	Ø25.0 mm	$1074.95	7 weeks
RET533LP-X New	533 nm	UV fused silica	Ø25.0 mm	$1074.95	7 weeks
RET489LP-X New	489 nm	UV fused silica	Ø25.0 mm	$1074.95	7 weeks

Raman Dichroic Mirror

Longpass Dichroic Mirror
Reflection Cutoff & Transmission Start Wavelength: 266 nm-785 nm
Ø25.0 mm (Mounted), Ø25.0 mm (Unmounted), 36 mm x 25.5 mm
Incidence Angle: 45°

LBTEK Raman long-pass dichroic mirrors are filters that allow long wavelengths to pass through while reflecting or absorbing short wavelengths. They exhibit high transmittance (Tavg > 90%) for light with wavelengths longer than the cut-on (cut-off) wavelength and high reflectance (Ravg > 90%) for light with wavelengths shorter than the cut-on (cut-off) wavelength. Raman long-pass dichroic mirrors are available in two types: mounted (Ø25.0 mm) and unmounted (Ø25.0 mm & 36 mm x 25.5 mm). For the mounted version, an arrow (↑) engraved on the housing indicates the direction of light propagation, while for the unmounted version, an arrow (>) on the side indicates the direction of the coated surface, facilitating installation and use. Raman long-pass dichroic mirrors are recommended for use at an incident angle of 45°. If the incident angle deviates from the design angle, the cut-on (cut-off) wavelength will shift.

The Raman dichroic mirror is installed on the coaxial mounting plate.

Product Model	Start (Stop) Wavelength	Base material	Size	Unit Price	Lead Time
RT633RDC New	633 nm	UV fused silica	Ø25.0 mm (with mounting)	$764.44	7 weeks
RT532RDC New	532 nm	UV fused silica	Ø25.0 mm (with mounting)	$764.44	7 weeks
RT785RDC-R New	785 nm	UV fused silica	36.0×25.5 mm （L×W）	$764.44	7 weeks
RT633RDC-R New	633 nm	UV fused silica	36.0×25.5 mm （L×W）	$764.44	7 weeks
RT532RDC-R New	532 nm	UV fused silica	36.0×25.5 mm （L×W）	$764.44	7 weeks
RT488RDC-R New	488 nm	UV fused silica	36.0×25.5 mm （L×W）	$764.44	7 weeks
RT355RDC-R New	355 nm	UV fused silica	36.0×25.5 mm （L×W）	$764.44	7 weeks
RT266RDC-R New	266 nm	UV fused silica	36.0×25.5 mm （L×W）	$764.44	7 weeks
RT785RDC-UM New	785 nm	UV fused silica	Ø25.0 mm (Not Installed)	$764.44	7 weeks
RT532RDC-UM New	532 nm	UV fused silica	Ø25.0 mm (Not Installed)	$764.44	7 weeks
RT266RDC-UM New	266 nm	UV fused silica	Ø25.0 mm (Not Installed)	$764.44	7 weeks