| 
                     
                      | 
                           
                            | Specifications |  |   
                            | Material | Crystal 
                              Quartz |  |   
                            | Dimension | +0.0, 
                              -0.2mm |   
                            | Wavefront 
                              distortion | <l/8 
                              @ 632.8 |   
                            | Retardation 
                              tolerance | <l/500 |   
                            | Parallelism | <1 
                              arc second |   
                            | Surface 
                              quality | 20-10 
                              scratch and dig |   
                            | Clear 
                              aperture | >80% |   
                            | AR/AR 
                              coating | R<0.2% 
                              at central wavelength |  |   
                      | 
                           
                            | f (mm) | ¦Ë/4 
                                Retardation | ¦Ë/2 
                                Retardation |   
                            | Uncoated | Coated | Uncoated | Coated |   
                            | 10.0 | WP0401 | WP0411 | WP0201 | WP0211 |   
                            | 12.7 | WP0402 | WP0412 | WP0202 | WP0212 |   
                            | 15.0 | WP0403 | WP0413 | WP0203 | WP0213 |   
                            | 20.0 | WP0404 | WP0414 | WP0204 | WP0214 |   
                            | 25.4 | WP0405 | WP0415 | WP0205 | WP0215 |  |  
                     
                      |  | The 
                        standard waveplate wavelengths (nm) of 
                        Dream Lasers' waveplates: 248nm, 266nm, 
                        355nm, 400nm, 488nm, 514nm, 532nm, 632.8nm, 780nm, 800nm, 
                        810nm, 850nm, 1064nm, 1310nm, 1480nm, 1550nm. |   
                      |  | Please 
                        refer to  
                        the Glossary 
                        and Technology 
                        for more information about waveplates. |   
                      |  | Please 
                        refer to Coating 
                        Chapter for more infomation of coating. |   
                      |  | Other 
                        sizes and coatings are available upon request. |   
                      |  | Please 
                        refer to Mount 
                        for Waveplates |  
                      |  | The 
                        thickness of this waveplate means handling can be difficult, 
                        we can provide mounts upon request. |  |