| 
                     
                      | 
                           
                            | 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 | WP1401 | WP1411 | WP1201 | WP1211 |   
                            | 12.7 | WP1402 | WP1412 | WP1202 | WP1212 |   
                            | 15.0 | WP1403 | WP1413 | WP1203 | WP1213 |   
                            | 20.0 | WP1404 | WP1414 | WP1204 | WP1214 |   
                            | 25.4 | WP1405 | WP1415 | WP1205 | WP1215 |  |  
                     
                      |  | 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 |  |