Thorlabs鍍有保護層銀(yin)膜(mo)的(de)反(fan)射(she)式準(zhun)直(zhi)器(qi)基于(yu)(yu)(yu)90°離軸(zhou)拋(pao)物面反(fan)射(she)鏡。和(he)透鏡不(bu)一樣(yang)的(de)是(shi),金屬反(fan)射(she)鏡的(de)焦距在(zai)寬波長(chang)范圍(wei)內保持不(bu)變。由于(yu)(yu)(yu)這(zhe)種固有屬性(xing),拋(pao)物面反(fan)射(she)鏡準(zhun)直(zhi)器(qi)不(bu)需(xu)要調節就能準(zhun)直(zhi)不(bu)同波長(chang)的(de)光(guang)(guang),因此(ci)非常(chang)適合用于(yu)(yu)(yu)多(duo)(duo)色(se)光(guang)(guang)。常(chang)見應用包括需(xu)要準(zhun)直(zhi)多(duo)(duo)個波長(chang)的(de)系統、紅外準(zhun)直(zhi)/耦合以及(ji)將多(duo)(duo)色(se)光(guang)(guang)耦合到(dao)大芯徑多(duo)(duo)模(mo)光(guang)(guang)纖中。
鍍有(you)保護層銀膜的(de)反射(she)(she)式準(zhun)(zhun)(zhun)直(zhi)(zhi)(zhi)器(qi)在(zai)(zai)450 nm到(dao)20 µm波長范(fan)圍提供高(gao)反射(she)(she)率(lv)。在(zai)(zai)可(ke)見(jian)光(guang)(guang)(guang)(guang)和紅(hong)外波段工作的(de)多(duo)(duo)波長系統中,這些反射(she)(she)型準(zhun)(zhun)(zhun)直(zhi)(zhi)(zhi)器(qi)既可(ke)將多(duo)(duo)色準(zhun)(zhun)(zhun)直(zhi)(zhi)(zhi)光(guang)(guang)(guang)(guang)耦(ou)合到(dao)大芯徑多(duo)(duo)模光(guang)(guang)(guang)(guang)纖(xian)(xian)中,又可(ke)準(zhun)(zhun)(zhun)直(zhi)(zhi)(zhi)光(guang)(guang)(guang)(guang)纖(xian)(xian)發射(she)(she)的(de)多(duo)(duo)色光(guang)(guang)(guang)(guang)。注意(yi),一般而(er)言,多(duo)(duo)模光(guang)(guang)(guang)(guang)纖(xian)(xian)發出(chu)的(de)光(guang)(guang)(guang)(guang)無法(fa)理(li)想(xiang)準(zhun)(zhun)(zhun)直(zhi)(zhi)(zhi)。準(zhun)(zhun)(zhun)直(zhi)(zhi)(zhi)多(duo)(duo)模光(guang)(guang)(guang)(guang)纖(xian)(xian)跳線發出(chu)的(de)光(guang)(guang)(guang)(guang)時,光(guang)(guang)(guang)(guang)纖(xian)(xian)的(de)數(shu)值孔徑應(ying)該< 0.40(RC02),< 0.36(RC04),< 0.167(RC08)或< 0.216(RC12),以防外殼阻擋部分光(guang)(guang)(guang)(guang)。
RC02、RC04和RC08反射(she)式準直(zhi)(zhi)器(qi)外(wai)殼帶有(you)SM05(0.535"-40)外(wai)螺紋(wen),而(er)RC12準直(zhi)(zhi)器(qi)外(wai)殼帶有(you)SM1(1.035"-40)外(wai)螺紋(wen)。因此(ci)(ci)這(zhe)些準直(zhi)(zhi)器(qi)直(zhi)(zhi)接兼容SM05或SM1螺紋(wen)光機(ji)械,比(bi)如(ru)LMR05或LMR1。RC02準直(zhi)(zhi)器(qi)后部加工成(cheng)Ø1/2英(ying)寸(cun)(cun),可(ke)以直(zhi)(zhi)接安裝到Ø1/2英(ying)寸(cun)(cun)光學(xue)調整(zheng)架中。此(ci)(ci)外(wai),拆下RC02、RC04或RC08外(wai)殼前面(mian)的滾花(hua)環,再使用SPW909扳手或SPW801可(ke)調扳手將其靠著Ø1英(ying)寸(cun)(cun)沉頭孔的后凸緣(yuan)擰入,就(jiu)直(zhi)(zhi)接安裝到了(le)Ø1英(ying)寸(cun)(cun)光學(xue)調整(zheng)架中。然(ran)后,擰緊安裝座的固定螺絲(si),就(jiu)可(ke)以固定準直(zhi)(zhi)器(qi)。
用于制造離(li)軸(zhou)拋物面(mian)反射鏡的(de)金剛石(shi)車削(xue)工藝可(ke)以實現< 100 Å RMS的(de)表(biao)面(mian)粗糙度,以大(da)程度地減少反射鏡表(biao)面(mian)的(de)散射(在633 nm下約為2%)。
Thorlabs也提供(gong)鍍紫外增強型(xing)鋁膜的反(fan)射式準直器(qi),用(yong)于250 - 450 nm波(bo)長范圍。
Thorlabs提供單模、保偏和多(duo)模光纖(xian)(xian)跳(tiao)(tiao)線(xian),用于耦(ou)合和準直應(ying)用。我(wo)們(men)也提供低插(cha)入損耗(hao)光纖(xian)(xian)跳(tiao)(tiao)線(xian),它(ta)們(men)采用纖(xian)(xian)芯同心度更好的單模光纖(xian)(xian),所以插(cha)入損耗(hao)更低,透(tou)過率更高。如果(guo)我(wo)們(men)庫存(cun)中(zhong)沒有您所需的光纖(xian)(xian)跳(tiao)(tiao)線(xian),Thorlabs還提供可當天發(fa)貨的定(ding)制光纖(xian)(xian)跳(tiao)(tiao)線(xian)。
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