双单色仪CM112 DK242
CM112和DK242可以在出厂时就设置为色散相加或相减模式的双单色仪。在两个模式里，两个单色仪像一个双重滤波器来消除散射光，效果是单单色仪的平方倍。在色散相加模式，双单色仪等效与一个双倍焦距单色仪，但可以更多的减少散射光。第一个光栅传播的光谱产生一个角度范围，第二个光栅加倍了这个角度范围，这样，双单色仪产生的分辨率是单个单单色仪的两倍。在相减色散模式中，第一个单色仪选择带通，第二个单色仪移除因为第一个单色仪引起的时间和角色散的误差。
CM112是一款可双向光栅驱动扫描，自动选择波长，双光栅塔台结构的紧凑型双级联单色仪，产品尺寸：约13x16x8cm；
DK242是一款可双向光栅驱动扫描，恒定光谱分辨率，两个三光栅塔台结构的双级联单色仪；
通过RS232连接电脑，是一种完全计算机控制的双级单色仪。CM112具有色散相加和色散相减两种模式。色散相加模式可以双倍提高光谱分辨率，适合高分辨率测量；色散相减模式，有效降低了单色仪杂散光，杂散光抑制极强，从而能进行更微弱信号的探测，如拉曼光谱、光电探测器光谱响应度标定等。色散相减模式只可以作单色仪使用，色散相加模式既可以作单色仪，又可以作光谱仪（可直接连接CCD）使用。在实际使用过程中需特别考虑光栅的选择。所有设备在出厂前均严格的定标，操作软件操作十分简单方便。
Fig1.CM112双单色仪 Fig2.DK242双单色仪
CM112产品参数：
| Feature | Value |
| Design: | Double cascaded Czerny-Turner, double-grating turrets standard in each section |
| Focal Length: | 110mm each section |
| f/#: | 3.9 overall |
| Beam Path: | Straight through standard, right angle provided on request. |
| Wavelength Drive: | Dual worm and wheel with electronic synchronization and computer control. Programable in additive or subtractive dispersion with positive or negative grating orders. |
| Wavelength Precision: | 0.1nm (additive) 0.2nm (subtractive) |
| Wavelength Accuracy: | ± 0.3nm (additive) ± 0.6nm (subtractive) |
| Max Resolution: | <0.5nm (additive) <1nm (subtractive) |
| Band Pass: | 0.25nm (additive) 0.50nm (subtractive), w/standard slits |
| Slewing Speed: | >100nm/second |
| Stray Light: | <10-9 |
| Slits: | Standard Set includes; 0.125mm, 0.15mm, 0.30mm, 0.6mm, 1.2mm and 2.4mm x 4.0mm. For other sizes, consult SP. |
| Gratings: | Two or four gratings (30 x 30mm) must be purchased. See CM grating options page |
| Software: | Demonstration control program and LabView driver included. |
| Power: | UL listed 110/220V power pack |
| Interface: | RS232 standard |
| Warranty: | One year |
| Options: |
See options and accessories |
DK242产品参数:
| Feature | Value |
| Design: | Double cascaded Czerny-Turner. Triple-grating turrets standard in each section. |
| Focal Length: | 240mm each section |
| f/#: | 3.9 overall |
| Reciprocal Dispersion: | 1.60nm/mm (additive) --- (with 1200 g/mm grating) |
| Wavelength Drive: | Dual worm and wheel with electronic synchronization and computer control. Programmable in additive or subtractive dispersion Programmable in additive or subtractive dispersion |
| Wavelength Precision: | 0.01nm (additive) 0.01nm (subtractive) |
| Wavelength Accuracy: | ± 0.30nm standard (with 1200 g/mm grating) |
| Scan Speed: | >1 to 1200nm/minute (with 1200g.mm grating) |
| Stray Light: | < 10-9 |
| Slits: | Unilateral, computer controlled, curved entrance and straight exit standard. Width - 10μm to 3000μm Height - 2mm to 20mm |
| Pulse Broadening: | 200 ps max (additive) 10 fs max (subtractive) |
| Max Resolution: | <0.04nm (additive) 0.06nm (subtractive) |
| Gratings: | Two to six gratings (68 x 68mm standard, 68 x 84mm optional) must be purchased. See DK Gratings. |
| Software: | Demonstration control program and LabView driver included. |
| Power: | 110 / 120V, 50/60Hz @ 1A standard. 220/230/240V, 50/60Hz @ 0.5A optional. |
| Interface: | RS232 standard |
| Warranty: | One year |
| Options: |
See options and accessories |
光栅选型表：
CM Series Standard Gratings, 30 x 30 mm
Part # | Ruling | Peak | Range (nm) | Peak %T |
(G/mm) | (nm) | |||
| AG2400-00240-303 | 2400 | 240 | 180 - 680 | 70 |
| AG1200-00500-303 | 1200 | 500 | 330 - 1000 | 83 |
| AG1200-00600-303 | 1200 | 600 | 400 - 1500 | 80 |
| AG1200-00750-303 | 1200 | 750 | 480 - 1500 | 85 |
| AG0600-00500-303 | 600 | 500 | 350 - 1300 | 80 |
| AG0600-01200-303 | 600 | 1200 | 800 - 3000 | 85 |
| AG0300-00500-303 | 300 | 500 | 310 - 1100 | 80 |
| AG0300-02500-303 | 300 | 2500 | 1500 - 6000 | 88 |
| AG0150-00500-303 | 150 | 500 | 320 - 980 | 72 |
| AG0150-04000-303 | 150 | 4000 | 2500 - 9000 | 93 |
| AG0075-08000-303 | 75 | 8000 | 5000 - 15000 | 82 |
| AG0075-01700-303 | 75 | 1700 | 1100 - 2800 | 85 |
| AG0045-01750-303 | 45 | 1750 | 1100 - 3000 | 75 |
DK Series Standard Gratings, 68 x 68 mm
Part # | Ruling | Peak | Range (nm) | Peak %T |
(G/mm) | (nm) | |||
| AG2400-00240-686 | 2400 | 240 | 180 - 680 | 70 |
| AG1200-00200-686 | 1200 | 200 | 180 - 450 | 65 |
| AG1200-00250-686 | 1200 | 250 | 180 - 460 | 70 |
| AG1200-00300-686 | 1200 | 300 | 200 - 750 | 72 |
| AG1200-00500-686 | 1200 | 500 | 330 - 1000 | 83 |
| AG1200-00600-686 | 1200 | 600 | 400 - 1500 | 80 |
| AG1200-00750-686 | 1200 | 750 | 480 - 1500 | 85 |
| AG1200-01000-686 | 1200 | 1000 | 550-1500 | 75 |
| AG0600-00500-686 | 600 | 500 | 350 - 1300 | 80 |
| AG0600-01250-686 | 600 | 1200 | 800 - 3000 | 85 |
| AG0600-01600-686 | 600 | 1600 | 950 - 3000 | 93 |
| AG0300-00500-686 | 300 | 500 | 310 - 1100 | 80 |
| AG0300-02000-686 | 300 | 2000 | 1200 - 4000 | 88 |
| AG0300-02500-686 | 300 | 2500 | 1500 - 6000 | 88 |
| AG0300-03000-686 | 300 | 3000 | 1800 - 6000 | 80 |
| AG0150-00500-686 | 150 | 500 | 320 - 980 | 72 |
| AG0150-04000-686 | 150 | 4000 | 2500 - 9000 | 93 |
| AG0075-08000-686 | 75 | 8000 | 5000 - 15000 | 82 |
| AG0050-00600-686 | 50 | 600 | 400 - 1200 | 78 |
| AG0050-12000-686 | 50 | 12000 | 7500 - 20000 | 82 |
NOTE: Ruled gratings blazed at other wavelengths and holographic gratings are available on request.
