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雙單色儀CM112 DK242
CM112和DK242可以在出廠時(shí)就設(shè)置為色散相加或相減模式的雙單色儀。在兩個(gè)模式里,兩個(gè)單色儀像一個(gè)雙重濾波器來(lái)消除散射光,效果是單單色儀的平方倍。在色散相加模式,雙單色儀等效與一個(gè)雙倍焦距單色儀,但可以更多的減少散射光。**個(gè)光柵傳播的光譜產(chǎn)生一個(gè)角度范圍,第二個(gè)光柵加倍了這個(gè)角度范圍,這樣,雙單色儀產(chǎn)生的分辨率是單個(gè)單單色儀的兩倍。在相減色散模式中,**個(gè)單色儀選擇帶通,第二個(gè)單色儀移除因?yàn)?*個(gè)單色儀引起的時(shí)間和角色散的誤差。
CM112是一款可雙向光柵驅(qū)動(dòng)掃描,自動(dòng)選擇波長(zhǎng),雙光柵塔臺(tái)結(jié)構(gòu)的緊湊型雙級(jí)聯(lián)單色儀,產(chǎn)品尺寸:約13x16x8cm;
DK242是一款可雙向光柵驅(qū)動(dòng)掃描,恒定光譜分辨率,兩個(gè)三光柵塔臺(tái)結(jié)構(gòu)的雙級(jí)聯(lián)單色儀;
通過(guò)RS232連接電腦,是一種完全計(jì)算機(jī)控制的雙級(jí)單色儀。CM112具有色散相加和色散相減兩種模式。色散相加模式可以雙倍提高光譜分辨率,適合高分辨率測(cè)量;色散相減模式,有效降低了單色儀雜散光,雜散光抑制極強(qiáng),從而能進(jìn)行更微弱信號(hào)的探測(cè),如拉曼光譜、光電探測(cè)器光譜響應(yīng)度標(biāo)定等。色散相減模式只可以作單色儀使用,色散相加模式既可以作單色儀,又可以作光譜儀(可直接連接CCD)使用。在實(shí)際使用過(guò)程中需特別考慮光柵的選擇。所有設(shè)備在出廠前均嚴(yán)格的定標(biāo),操作軟件操作十分簡(jiǎn)單方便。
Fig1.CM112雙單色儀 Fig2.DK242雙單色儀
CM112產(chǎn)品參數(shù):
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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