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Broadband,Inc.

 

〒121-0832

東京都足立区

古千谷本町4-7-9

 

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TEL:03-5838-0082

ask@bblaser.com

 

Tsurupica THz Super Lens

Tsurupica THz Optics

 Patented : Pax Co. , RIKEN

                   Tsurupica-RR & -R

                       Tsurupica-S

Tsurupica TM (Terahertz Super lens) has extremely higher transmission and lower absorption at the wavelength of VIS and THz than conventional material such as polyethylene . This lens is invented by Tera-Photonics Research Team Photo-Dynamics Research Center at RIKEN     ( http://www.riken.go.jp/lab-www/tera/index.html )

The lens is made of transparent material and has the same refractive index at both THz region and visible wavelength. So the beam propagation of invisible THz wave can be visualized and traceable by He-Ne laser. (see the transmission data below)

The second key feature is Tsurupica doesn't have the strong absorption that Polyethylene has, so this material is suitable for window of cryostat or bolometers.

Fresnel loss is also lower than that of Si substrate.  

For further information, please contact ask@bblaser.com

 

Key Features:
  • No absorption around 2THz           ( Polyethylene has strong absorption around 2THz)
  • High transmission for both VIS and THz region
  • Freq. Range: upto 12THz
  • Same refractive index at THz & Visible range :    1.52 @ THz wave  1.52 @ Visible wave
  • Suitable for window of Bolometer, cryostat, detector or chamber
  • Aperture: upto 100mm or 4" as standard size
  • Concave, convex, Bi-convex, cylindrical, Aspheric, wedge plate, prism, sample plate,  etc..

 

Product Line Up              We have the following three types of the surface finish.
Type surface finish surface roughness comment
Tsurupica-RR

Optically polished

<0.05um VIS range can be transmitted without any distortion of beam profiles.
Tsurupica-R Rough  polished  <0.30um Performance at THz is the same as above. VIS range still can be transmitted.
Tsurupica-S Unpolished - Affordable THz lens and effective for block VIS right

 

Standard products  
     Standard Products ListAdobe Acrobat Reader Icon
PDF Data
        
     CatalogAdobe Acrobat Reader Icon         
     Chemicals proofAdobe Acrobat Reader Icon
     Transmission_dataAdobe Acrobat Reader Icon

 

  Transmission data:   Tsurupica has no absorption around 2 THz

See the detail data, click the following picture !

 

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