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我们镭雕加工的激光是如何產生?/h2>
来源Q?a href='http://www.wquant.com/news/99.html'>http://www.wquant.com/news/99.html发布旉Q?016-10-10
1、量子理?br />
1917q愛因斯坦提出物質與(lu)d的(qiao)(hu)用有(shi)三(sui)(pin)本的過(tiao)Q(ben)(han)(ji)(ji)Ȁ發(jian)(hun)(hun)(lu)(lu)Ӟ自發(lu)(lu)(ju)和(shen)發放(qiao)E。激發(jian)(hun)(hun)(lu)(lu)即(ji)(ji)一般的(lu)(lu)E,當E光含有(shi)hμ=E2-E1之(pin)子入處g(jian)階(基態)為E(qiu)1Q(ben)而(han)M(cun)高能階能(yue)為E2(jian)質時,的光子能(yue)將(ye)使(kua)原(zeng)自E(ji)1w遷至E2?
當原(shi)(ying)自(mo)w遷(nie)x(jian)(jian)(jian)(huan),(ren)(lian)兩(ba)(lian)過(lian)(lian)E(fu)它重q至(li)基態Q(ben)(han)(han)(juan)(juan)(mo)(jian)(jian)(jian)(yi)(yi),(ren)(ti)不(zhen)(que)外界的(qing)(qing)(qing)q擾Q(ben)過(lian)(lian)(juan)(juan)D|間後Q(ben)(han)(han)(nie)行(nie)E(ji)2(cen)(nai)階降(nie)E(huo)1(cen)(nai)階,(ren)(juan)(juan)釋攑ևhμ(wei)的(fan)(zui)(zui)(ying)能(yue),(ren)此自(mo)(jian)(jian)(jian)(yi)(yi)的(qing)(qing)(qing)(kou)向(cheng)、(quan)(huan)等是Q意的(qing)(qing)(qing)。另(huo)(juan)(juan)過程為激(jian)(jian)(jian)(yi)(yi)(fan)(ji)處(chen)Ȁ(jian)(jian)(jian)(cen)原(shi)(ying),(ren)由於受(yu)外來(di)(di)光子(cen)撞擊,(ren)而由高能階向(cheng)(huan)(zhi)階(zhi)遗此(xiu)()(ren)所產生的(fan)(zui)(zui)(ying)與外來(di)(di)的(fan)(zui)(zui)(ying)有相同特微Q(ben)(han)(han)(ji)它們的(qing)(qing)(qing)(que)ȝ、(quan)偏極(kou)向(cheng)(xia)(han)(han)播方(nan)(yang)均Z(nie)。由(kou)(jian)(zui)(zui)(ying)的(qing)(qing)(qing)(suo)(ge)反而(han)(han)(e)(qing)(ren)(suo)(yi)人稱光(qun)L(chang)(lian)(qun)(yi)(yi)大的(qing)(qing)(qing)(huan)用。假a物質由(juan)(juan)堆(pang)(suo)(ge)N的(fan)(shi)(ying)所i(gun)成Q(ben)我(lian)將(ye)(zha)子的(ju)階簡化成(yang)高能階(chou)E2(xia)低能兩(ba)?two-levelatoms)Q(ben)(han)(han)(juan)(juan)述的過(lian)(lian)E(fu)(huan)(yu)E1(xia)E2能階(chou)的(fan)(shi)(ying)數目隨E1(xiu)間而()Q(ben)針E(qu)2能階(chou)而()?
1、量子理?br />
1917q愛因斯坦提出物質與(lu)d的(qiao)(hu)用有(shi)三(sui)(pin)本的過(tiao)Q(ben)(han)(ji)(ji)Ȁ發(jian)(hun)(hun)(lu)(lu)Ӟ自發(lu)(lu)(ju)和(shen)發放(qiao)E。激發(jian)(hun)(hun)(lu)(lu)即(ji)(ji)一般的(lu)(lu)E,當E光含有(shi)hμ=E2-E1之(pin)子入處g(jian)階(基態)為E(qiu)1Q(ben)而(han)M(cun)高能階能(yue)為E2(jian)質時,的光子能(yue)將(ye)使(kua)原(zeng)自E(ji)1w遷至E2?
當原(shi)(ying)自(mo)w遷(nie)x(jian)(jian)(jian)(huan),(ren)(lian)兩(ba)(lian)過(lian)(lian)E(fu)它重q至(li)基態Q(ben)(han)(han)(juan)(juan)(mo)(jian)(jian)(jian)(yi)(yi),(ren)(ti)不(zhen)(que)外界的(qing)(qing)(qing)q擾Q(ben)過(lian)(lian)(juan)(juan)D|間後Q(ben)(han)(han)(nie)行(nie)E(ji)2(cen)(nai)階降(nie)E(huo)1(cen)(nai)階,(ren)(juan)(juan)釋攑ևhμ(wei)的(fan)(zui)(zui)(ying)能(yue),(ren)此自(mo)(jian)(jian)(jian)(yi)(yi)的(qing)(qing)(qing)(kou)向(cheng)、(quan)(huan)等是Q意的(qing)(qing)(qing)。另(huo)(juan)(juan)過程為激(jian)(jian)(jian)(yi)(yi)(fan)(ji)處(chen)Ȁ(jian)(jian)(jian)(cen)原(shi)(ying),(ren)由於受(yu)外來(di)(di)光子(cen)撞擊,(ren)而由高能階向(cheng)(huan)(zhi)階(zhi)遗此(xiu)()(ren)所產生的(fan)(zui)(zui)(ying)與外來(di)(di)的(fan)(zui)(zui)(ying)有相同特微Q(ben)(han)(han)(ji)它們的(qing)(qing)(qing)(que)ȝ、(quan)偏極(kou)向(cheng)(xia)(han)(han)播方(nan)(yang)均Z(nie)。由(kou)(jian)(zui)(zui)(ying)的(qing)(qing)(qing)(suo)(ge)反而(han)(han)(e)(qing)(ren)(suo)(yi)人稱光(qun)L(chang)(lian)(qun)(yi)(yi)大的(qing)(qing)(qing)(huan)用。假a物質由(juan)(juan)堆(pang)(suo)(ge)N的(fan)(shi)(ying)所i(gun)成Q(ben)我(lian)將(ye)(zha)子的(ju)階簡化成(yang)高能階(chou)E2(xia)低能兩(ba)?two-levelatoms)Q(ben)(han)(han)(juan)(juan)述的過(lian)(lian)E(fu)(huan)(yu)E1(xia)E2能階(chou)的(fan)(shi)(ying)數目隨E1(xiu)間而()Q(ben)針E(qu)2能階(chou)而()?
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