每個(ge)探測(ce)(ce)器(qi)還配有內部(bu)偏壓電池，封裝(zhuang)在堅固的鋁(lv)殼中。我們的偏壓光(guang)電探測(ce)(ce)器(qi)兼容(rong)我們的臺式光(guang)電二(er)極管放(fang)大器(qi)和PMT跨阻放(fang)大器(qi)。

這些探(tan)測(ce)器(qi)(qi)具(ju)有寬帶直流耦合輸(shu)出，非常適(shi)合監測(ce)快(kuai)速脈沖激光和直流光源。側面的BNC接頭提供直接的光電(dian)(dian)(dian)(dian)二極管陽極電(dian)(dian)(dian)(dian)流。通過一個(ge)終端電(dian)(dian)(dian)(dian)阻將該輸(shu)出轉換(huan)為正電(dian)(dian)(dian)(dian)壓。如果查(cha)看(kan)高速信號(hao)，Thorlabs推薦使用50 Ω負(fu)載電(dian)(dian)(dian)(dian)阻。對于較低帶寬應用，利用我們的可(ke)變終端或固定短樣式終端能(neng)夠快(kuai)速調節測(ce)量電(dian)(dian)(dian)(dian)壓。下方探(tan)測(ce)器(qi)(qi)沒有放(fang)大(da)(da)器(qi)(qi)或內置增(zeng)益(yi)，因此工作(zuo)速度(du)一般比我們的PDA系列放(fang)大(da)(da)光電(dian)(dian)(dian)(dian)探(tan)測(ce)器(qi)(qi)要快(kuai)；對于需要增(zeng)益(yi)或可(ke)更(geng)(geng)換(huan)濾(lv)光片的應用，PDA放(fang)大(da)(da)光電(dian)(dian)(dian)(dian)探(tan)測(ce)器(qi)(qi)可(ke)能(neng)更(geng)(geng)為合適(shi)。

所有的(de)連接端和(he)控制按鈕(niu)都不在光(guang)(guang)路上，簡化了探測(ce)器(qi)在封閉空間內的(de)集成(cheng)。每(mei)(mei)個(ge)探測(ce)器(qi)具(ju)有SM05(0.535"-40)內螺紋(wen)和(he)SM1(1.035"-40)外螺紋(wen)。每(mei)(mei)個(ge)DET外殼(ke)包含一個(ge)可拆卸的(de)Ø1英(ying)寸光(guang)(guang)學(xue)元(yuan)件安(an)(an)裝座(zuo)(SM1T1)，用(yong)于沿光(guang)(guang)軸(zhou)安(an)(an)裝Ø1英(ying)寸元(yuan)件，比如濾光(guang)(guang)片和(he)透鏡。每(mei)(mei)個(ge)DET探測(ce)器(qi)也可安(an)(an)裝在籠式系統(tong)、透鏡套(tao)管或Ø1/2英(ying)寸接桿上。每(mei)(mei)個(ge)探測(ce)器(qi)的(de)外殼(ke)都有兩個(ge)通用(yong)安(an)(an)裝孔，兼容8-32和(he)M4螺紋(wen)。

每(mei)個探測器(qi)都由裝在外殼中(zhong)的(de)A23 12 VDC電(dian)(dian)(dian)池(chi)(chi)提供反向偏置電(dian)(dian)(dian)壓(ya)。外殼上還(huan)有(you)一個紅(hong)色的(de)按鈕(niu)，按住這個按鈕(niu)時，電(dian)(dian)(dian)池(chi)(chi)的(de)電(dian)(dian)(dian)壓(ya)將(jiang)加到(dao)外部負載上。對于高(gao)Z負載，電(dian)(dian)(dian)池(chi)(chi)的(de)電(dian)(dian)(dian)壓(ya)將(jiang)高(gao)于BNC，因此方便判斷(duan)是(shi)否需要更換(huan)電(dian)(dian)(dian)池(chi)(chi)，而不(bu)必將(jiang)電(dian)(dian)(dian)池(chi)(chi)取出。如(ru)果電(dian)(dian)(dian)池(chi)(chi)連接到(dao)一個50 Ω的(de)負載上測試，串聯的(de)限流電(dian)(dian)(dian)阻可保護電(dian)(dian)(dian)池(chi)(chi)不(bu)被快(kuai)速放電(dian)(dian)(dian)。請注(zhu)意(yi)，由于不(bu)同制造(zao)商(shang)生產的(de)電(dian)(dian)(dian)池(chi)(chi)的(de)正極(ji)端(duan)子之(zhi)間可能會存在細微(wei)差別，Thorlabs只建議在我們的(de)DET系列光電(dian)(dian)(dian)探測器(qi)中(zhong)使(shi)用(yong)Energizer電(dian)(dian)(dian)池(chi)(chi)。由于電(dian)(dian)(dian)池(chi)(chi)是(shi)一種噪聲極(ji)低的(de)電(dian)(dian)(dian)源(yuan)(yuan)，所以將(jiang)它作為反向偏壓(ya)電(dian)(dian)(dian)源(yuan)(yuan)。如(ru)果不(bu)能接受電(dian)(dian)(dian)池(chi)(chi)的(de)使(shi)用(yong)壽命有(you)限，則可以用(yong)DET2B電(dian)(dian)(dian)源(yuan)(yuan)套件替換(huan)該電(dian)(dian)(dian)池(chi)(chi)。

請注意，在探測(ce)器(qi)有(you)(you)源區邊緣的(de)不均勻性可能產生有(you)(you)害(hai)的(de)電容(rong)和電阻效應，從而扭(niu)曲(qu)光電二極管輸出(chu)的(de)時域(yu)響應。因此，Thorlabs建議(yi)將入射光正對有(you)(you)源區中(zhong)心。外殼上(shang)的(de)SM1(1.035"-40)螺紋非常(chang)適(shi)合將Ø1英寸聚焦透鏡(jing)或針孔安裝在探測(ce)元件(jian)前面。

• 緊湊型外殼，用于狹窄空間的測量
• 兼容SM05透鏡套筒、SM1透鏡套筒、籠式系統和Ø1/2英寸接桿
• 包含內置A23 12 V偏壓電池
• 下方提供可選用的電源適配器和電源
• 可以通過SM1內螺紋和外螺紋光纖轉接件進行光纖耦合