Rowland holographic grating combines the functions of dispersion and focusing. If the fringes are projected on a tangential plane passing the center of the grating, the projections have equal distance and are parallel. Its geometric optical properties are the same as ruled gratings and are changeable with them.
Holographic Rowland Gratings
| Code | Concave radius(mm) | Grooves Per mm | Wavelength range(nm) | Dimension | Coating |
|---|---|---|---|---|---|
| 30-01 | 60 | 303 | 380-720 | φ39 | Al |
| 30-11 | 112.2 | 1200 | 200-800 | 32x32 | Al |
| 30-12 | 130.2 | 150 | 500-700 | φ70 | Al |
| 30-13 | 130.2 | 150 | 500-700 | φ90 | Al |
| 30-14 | 201.4 | 2400 | 200-400 | 58x58 | Al |
| 30-15 | 201.4 | 2400 | 200-400 | 30x30 | Al |
| 30-16 | 201.4 | 1200 | 200-600 | 58x58 | Al |
| 30-17 | 201.4 | 1200 | 340-800 | 30x30 | Al |
| 30-18 | 201.4 | 600 | 400-700 | 30x30 | Al |
| 30-19 | 201.4 | 600 | 400-700 | 58x58 | Al |
| 30-20 | 498.1 | 3600 | 100-300 | 30x30 | Al+MgF2 |
| 30-21 | 498.1 | 3600 | 150-450 | φ63.5 | Al+MgF2 |
| 30-22 | 498.1 | 2700 | 120-400 | φ50.8 | Al+MgF2 |
| 30-23 | 498.1 | 2400 | 100-300 | 30x30 | Al+MgF2 |
| 30-24 | 498.1 | 2400 | 200-400 | 30x30 | Al |
| 30-25 | 498.1 | 1200 | 170-700 | φ50.8 | Al+MgF2 |
| 30-26 | 498.1 | 1200 | 340-800 | φ50.8 | Al |
| 30-27 | 750 | 2400 | 170-600 | φ63.5 | Al+MgF2 |
| 30-28 | 750 | 1200 | 170-700 | φ63.5 | Al+MgF2 |
| 30-29 | 750 | 600 | 400-700 | φ63.5 | Al |
| 30-30 | 998.8 | 3600 | 150-450 | φ63.5 | Al+MgF2 |
| 30-31 | 998.8 | 2400 | 100-300 | φ63.5 | Al+MgF2 |
| 30-32 | 998.8 | 2160 | 170-450 | φ63.5 | Al+MgF2 |
| 30-33 | 998.8 | 1080 | 170-800 | φ63.5 | Al+MgF2 |
| 30-34 | 998.8 | 1080 | 337-815 | φ63.5 | Al |
| 30-35 | 1500 | 3600 | 160-450 | φ63.5 | Al+MgF2 |
| 30-36 | 1500 | 2400 | 160-450 | φ63.5 | Al+MgF2 |
| 30-37 | 1500 | 2400 | 200-650 | φ63.5 | Al+MgF2 |
| 30-38 | 1500 | 1200 | 170-700 | φ63.5 | Al+MgF2 |