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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。**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,**个单色仪选择带通,第二个单色仪移除因为**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: |
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