CNI_logo_greenbluelasermanufacturer

Changchun New Industries Optoelectronics Technology Co., Ltd.
Lasers, Optics & Photonics

Products
Lasers
Laser Systems
Laser Measurement & Safety
Laser Marking
Spectrum Analysis
Laboratory Instruments
Fiber-Coupled LEDs
Optics & Coatings
Components & Accessories
Customized System
 
Components & Accessories
Laser diode
Laser optics
Fiber for laser coupling
Beam expander
AOM and Shutter
Multi-function optical system
Variable attenuator
Laser goggles

……

 
Customer Service
TTL or analog modulation
Fiber coupling
Coating service
Laser marking service
Complete Solution
 
Contact CNI
Tel: +86-431-85603799 / 89216078
Fax:    +86-431-89216068
E-mail:  sales@cnilaser.com
国内: 0431-87020257 / 89216068
 

Filter

 

The filter is a kind of optical elements which to make a specific wavelength of light to pass through, and the other wavelength of light reflection or attenuation. The advantages of the filter having the high transmittance of the peak value, a flat pass band spectrum in a wide wavelength range with good cutoff, and the temperature stability is better.


Raman Spectroscopy Filters
 
Raman spectroscopy filters ensures high transmittance of Raman scattering spectrum while filtering out high-intensity laser. The filters are produced by the advance ion beam sputtering coating process of Veeco equipment.
 

 

Wavelength

Model

Types of filters

Size (mm)

Stock status

532nm

532-AAB-54AB-3

Laser clean-up filter

D25.4×2

In stock

25.4×25.4×2

12.7×12.7×2

532-LAB-90CB-3

Long-pass edge filter

D25.4×2

25.4×25.4×2

12.7×12.7×2

532-LDAB-50AB-S

Laser dichroic filter

25.4×25.4×2

12.7×12.7×2

 

 

785nm

 

785-AAB-54AB-3

Laser clean-up filter

D25.4×2

In stock

25.4×25.4×2

12.7×12.7×2

785-LAB-90AB-4

Long-pass edge filter

D25.4×2

25.4×25.4×2

12.7×12.7×2

785-LDAB-50AB-S

Laser dichroic filter

D25.4×2

25.4×25.4×2

12.7×12.7×2

  785nm Laser clean-up filter

  785nm Ultrasteep long-pass edge filter

  785nm Laser dichroic filter

 

Linear Variable Long Wave Pass Filter (LVLWP)
 
The thickness of the coating layer is not equal on the lens, and the long wave pass cutoff range shows a gradual change result on the lens. Commonly used in cutoff of grating multistage diffraction light, putting before CCD of optical fiber spectrometer. The quartz substrate was coated by ion sputtering to achieve minimum autofluorescence and high laser damage threshold.
CNI provide standard model size is 41.4mm×9.5mm×1mm.
 
  Spectrometer structure diagram

 
1. Connector 5. Focusing mirror
2. Entrance slit 6. Continuously variable order sorting filter
3. Collimating mirror 7. Line scan detector (CCD)
4. Grating    
  Test curve


Notch Filter
 
Narrow notch filters are used in Raman spectroscopy and instrument amplifiers to reduce or prevent audio feedback, while having little noticeable effect on the rest of the frequency spectrum. Other names include 'band limit filter', 'T-notch filter', 'band-elimination filter', and 'band-reject filter'.
 

Standard Product

Material

BK7 / K9 / Fused Silica

Paraxial Focal Length

±2%

Centration

3 arc minutes

Clear Aperture

>80%

Bevel

0.25 mm x 45°

Surface Quality

 20-10/ 40-20/ 60-40

Surface Figure

l/4@632.8nm

 

  Test curve


Band-pass Filter

    The band-pass filter is a kind of optical elements which to make a specific wavelength of light to pass through, and the other wavelength of light reflection or attenuation. The work area is generally in ultraviolet light area, near infrared area and far infrared area.
    Product Application
Mainly used in the field of biochemical, medical, image recognition, detection sensors and laser systems.
    MaterialK9, Fused Silica
 


Cut-off Filter

The cut-off filters are an optical device which only permits the transmission of radiation of wavelengths that are longer than or shorter than a specified wavelength. CNI can offer different kinds of cut-off filters upon your requests.

  Long Pass Filters, Ravg 99% from UV to 500 nm, Tavg 95% from 530nm to 1200nm

  Short Pass Filters, Ravg99% from 700 to 900nm, Tavg 95% from 400nm to 680nm, other specs are available on requests.

 

Addr: No.888 Jinhu Road High-tech Zone,Changchun 130103, P.R.China
Domestic Tel:  0431-87020257   International Tel: +86-431-85603799   Fax:+86-431-89216068