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Laser Line Bandpass Filters
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產品特色

Laser line filters are ideal for transmitting laser light while suppressing ambient light as well as lower intensity secondary laser lines. The center wavelength shifts linearly with temperature less than 0.02 nm/°C. The highly reflective side of the filter should generally face the source, minimizing the thermal load on the blocking glass and epoxies.

 

·         Out-of-band blocking to less than 0.01% (10-4)

·         Excellent temperature stability

·         Center wavelengths at common laser lines

·         12.7 and 25.4 mm diameters

·         Improved manufacturing processes

·         Proudly made in the USA

 

 

Excellent Out-of-Band Blocking

 

Our filters have excellent out-of-band blocking, less than 0.01% (10-4). The highly reflective side of the filter should generally face the source, minimizing the thermal load on the blocking glass and epoxies.

 

 

Center Wavelengths for Common Lasers

 

Wavelengths range from the ultraviolet to the near infrared, covering most of the common laser lines. 12.7 and 25.4 mm diameter filters are available in most wavelengths. They are mounted in a black anodized aluminum housing to protect the filter and make handling the optics easier.

 

 

Sensitivity to Angle of Incidence

An increase in the angle of incidence causes a shift of the center wavelength to shorter wavelengths. This can be very useful in tuning a narrowband filter to a desired wavelength. The wavelength shift with angle of incidence, can be calculated by: λ = λo [1-(no/ne)2 sin2θ]1/2  where λ is the wavelength at the new angle of incidence; λo is the center wavelength; no is the index of refraction of the environment (no = 1 in air); ne is the effective index of refraction of the filter; and θ is the angle of incidence.

 

 

Proudly Made in the USA

Newport's Optical Filters Facility in Franklin, Massachusetts, boasts advanced production processes and unsurpassed novel design approaches for the manufacture of high quality and exceptional blocking filters. With state of the art coating chambers and technical staff, our filters exhibit high performance at a reasonable price.

 

 

Technical Notes

·         Specifying Bandpass Filters

·         Optical Filter Surface Quality 

·         Optical Filter Construction

 

 

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