Optical Specifications

Optical Materials

Achromatic Lenses

Spherical Lenses

Cylindrical Lenses

Prisms

Penta Prisms

Corner Cube Retroreflector

Waveplate

Beamsplitters

Filters

Coating

Cleaning Optics

 

 

Principle Multi / Low / Zero/ True ZeroOrder Specifications Achromatic Waveplate

In practice, the thickness required to produce true-zero order waveplate is about tens of micron according to the wavelength, which is too thin to manufacture. For this reason, multiple order waveplate often provides a convenient means of producing the required retardation. Dream Lasers provides two kinds of multiple orders waveplates---low-order and multi-order which are classified by the thickness. The retardation value of a multiple order waveplate is strongly dependent on temperature, wavelength, angle of incidence and degree of collimation. Zero-order waveplates do not have this dependency. A zero-order waveplate is constructed of two multiple order waveplates (optically contacted, cemented or airspaced) with their axes crossed. Thus, the effect of the first plate is canceled by the second, except for the residual difference between them. The following Table based on 532 nm, /4 waveplates with retardation tolerance </100 gives you a rough idea of the comparison among all the orders waveplates.

Order of Waveplate
Multi
Low
True-Zero
Zero
Cemented
Single Plate
Cemented
Air-spaced
Optically Contacted
Thickness (mm)
~1
<0.5
1.5~2
<0.1
1.5~2
8 (With Mount)
1.5~2
Spectral bandwidth
0.5nm
1.5nm
30nm
Temperature bandwidth
10C
38C
735C
Angular bandwidth
2.5
4.5
20
20
3
3
3
Damage threshold (MW/cm2)
>500
>500
>10
>500
>10
>500
>500

Home | Company Profile | Lasers | Optics | Crystals | Support | Constact
Copyright © 2002-2008 by Shanghai Dream Lasers Technology Co., Ltd.