1、3/msJ),(T/1hKThEe328cVdPn118/33KThechTJK/1038062.12312hEE21212dnA n dt212212211spdndnAdtndt n 21220()A tn tn e/220()tn tn e211/A红宝石晶体自发辐射平均寿命测量装置测量得到的原子自发辐射能量衰减曲线h12W121211stdnWdtn1212WBh212121stdnWdtn2121WB212211eeKTngeng212112ststspdndndndtdtdt212212121A nBnBn121212121211BB nAB n213/32211811hKTeeK
2、Thcengeng 321121321212118hhKTKTcBB geehAB g 121212B gB gT 321321118hhKTKTcBeehA 3213218BcAh 21ststdndndtdt212121BnBn2121211B nB n2121212211hKTB gB gngeng1hKTe要满足该条件,只有要满足该条件,只有T0,这,这意味着物质处于温度低于绝意味着物质处于温度低于绝对零度的状态,而这是对零度的状态,而这是不可不可能能的。的。()/()dI zI zGdz00()G zI zI e()1()dI zdzI z()()()dI zG II z dz损耗大
3、于增益增益大于损耗0()0()GzI zI e()G z21()/EEhM1M2SJhh 3410624.6;02;2;nkhkp22chcmlklhlnhlklknlhlkl2,2,2lznymxnk2lzknykmxkzyx,Vzyxkkkzyx33kdkk,kdk2481VkdkP32/4812dckdck2;22d238PVdc328cnhPzhPyhPxzyx,3hPPPzyxzyx33(1)xyzkkkx y zV 2,2,2xxyyzzPkPkPk33338xyzxyzxyzPPPPPPkkkhx y z 3hPPPzyxzyx22)(x2)(xcLc22321ccVcchPPchPPPzyx3hPPPzyxzyxCSzyxVcPPPhzyx2233)(a21c