每個探(tan)測(ce)器(qi)(qi)還配有內部偏壓(ya)電(dian)池，封裝在堅固的(de)鋁殼中。我們的(de)偏壓(ya)光(guang)電(dian)探(tan)測(ce)器(qi)(qi)兼容(rong)我們的(de)臺式光(guang)電(dian)二極管放大器(qi)(qi)和PMT跨阻放大器(qi)(qi)。

這些探(tan)測器(qi)(qi)具有(you)寬帶直流耦合輸出，非常適(shi)(shi)合監測快(kuai)(kuai)速(su)(su)脈沖激光(guang)(guang)和直流光(guang)(guang)源(yuan)。側(ce)面的(de)BNC接(jie)頭提供直接(jie)的(de)光(guang)(guang)電二極(ji)管陽極(ji)電流。通過一(yi)(yi)個終(zhong)端(duan)電阻(zu)將該輸出轉換(huan)為(wei)正電壓(ya)。如(ru)果(guo)查看(kan)高速(su)(su)信號，Thorlabs推薦使用(yong)50 Ω負載電阻(zu)。對(dui)于(yu)較低(di)帶寬應用(yong)，利用(yong)我(wo)們的(de)可(ke)變終(zhong)端(duan)或固定短樣式終(zhong)端(duan)能夠快(kuai)(kuai)速(su)(su)調節測量電壓(ya)。下方探(tan)測器(qi)(qi)沒有(you)放大器(qi)(qi)或內(nei)置增(zeng)益(yi)，因此工作速(su)(su)度一(yi)(yi)般比我(wo)們的(de)PDA系(xi)列放大光(guang)(guang)電探(tan)測器(qi)(qi)要快(kuai)(kuai)；對(dui)于(yu)需(xu)要增(zeng)益(yi)或可(ke)更換(huan)濾(lv)光(guang)(guang)片的(de)應用(yong)，PDA放大光(guang)(guang)電探(tan)測器(qi)(qi)可(ke)能更為(wei)合適(shi)(shi)。

所有(you)的(de)連接端和控制按鈕都(dou)不在(zai)(zai)光路上(shang)，簡化了探(tan)測(ce)器(qi)(qi)在(zai)(zai)封閉空間內的(de)集(ji)成。每(mei)個(ge)探(tan)測(ce)器(qi)(qi)具有(you)SM05(0.535"-40)內螺紋(wen)和SM1(1.035"-40)外(wai)螺紋(wen)。每(mei)個(ge)DET外(wai)殼(ke)包含(han)一個(ge)可拆卸(xie)的(de)Ø1英(ying)寸(cun)光學元件安(an)(an)裝(zhuang)(zhuang)座(SM1T1)，用于(yu)沿光軸安(an)(an)裝(zhuang)(zhuang)Ø1英(ying)寸(cun)元件，比如濾光片和透鏡。每(mei)個(ge)DET探(tan)測(ce)器(qi)(qi)也可安(an)(an)裝(zhuang)(zhuang)在(zai)(zai)籠(long)式系統、透鏡套管或Ø1/2英(ying)寸(cun)接桿上(shang)。每(mei)個(ge)探(tan)測(ce)器(qi)(qi)的(de)外(wai)殼(ke)都(dou)有(you)兩個(ge)通用安(an)(an)裝(zhuang)(zhuang)孔(kong)，兼容8-32和M4螺紋(wen)。

每個探(tan)測(ce)器都由裝在(zai)外殼(ke)中的(de)(de)(de)A23 12 VDC電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)提供反向(xiang)偏(pian)置電(dian)(dian)(dian)(dian)(dian)壓(ya)。外殼(ke)上還(huan)有(you)(you)一個紅色(se)的(de)(de)(de)按鈕，按住(zhu)這個按鈕時，電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)將(jiang)加(jia)到(dao)外部(bu)負載(zai)上。對于(yu)高Z負載(zai)，電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)將(jiang)高于(yu)BNC，因此方便判斷是否(fou)需要(yao)更換(huan)電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)，而不(bu)必將(jiang)電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)取(qu)出。如(ru)果(guo)電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)連(lian)接到(dao)一個50 Ω的(de)(de)(de)負載(zai)上測(ce)試，串聯的(de)(de)(de)限(xian)(xian)流電(dian)(dian)(dian)(dian)(dian)阻可(ke)保護電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)不(bu)被(bei)快速(su)放電(dian)(dian)(dian)(dian)(dian)。請注意，由于(yu)不(bu)同(tong)制造商生產的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)的(de)(de)(de)正極端子之間可(ke)能會存在(zai)細微差別，Thorlabs只建議在(zai)我(wo)們的(de)(de)(de)DET系列光電(dian)(dian)(dian)(dian)(dian)探(tan)測(ce)器中使用(yong)Energizer電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)。由于(yu)電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)是一種噪聲(sheng)極低(di)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)源，所以將(jiang)它作為反向(xiang)偏(pian)壓(ya)電(dian)(dian)(dian)(dian)(dian)源。如(ru)果(guo)不(bu)能接受電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)的(de)(de)(de)使用(yong)壽命(ming)有(you)(you)限(xian)(xian)，則可(ke)以用(yong)DET2B電(dian)(dian)(dian)(dian)(dian)源套件(jian)替換(huan)該(gai)電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)。

請注意，在探(tan)測器有(you)源區邊緣(yuan)的不均勻性可(ke)能產生有(you)害的電容和電阻效應，從而扭曲光電二極管輸(shu)出的時域響應。因此，Thorlabs建議將入射光正對有(you)源區中心。外殼上的SM1(1.035"-40)螺紋非常適合將Ø1英(ying)寸聚(ju)焦透鏡或針(zhen)孔安裝在探(tan)測元件(jian)前面。

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