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    [原创]RP Fiber Power仿真设计掺铥光纤激光器代码详解 [复制链接]

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    只看楼主 倒序阅读 楼主  发表于: 2020-05-28
    (* AONEUSxJ  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, `{KdmWhW  
    pumped at 790 nm. Across-relaxation process allows for efficient 8NZQTRdH  
    population of theupper laser level. 8l.bT|#O  
    *)            !(*  *)注释语句 IgIM8"N  
    OA7YWk<K  
    diagram shown: 1,2,3,4,5  !指定输出图表 V?L8BRnV  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 1a gNwFd~  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 0 :iR=S  
    ; 3:"Variation of the Fiber Length"!信号输出功率vs 光纤长度的变化,仿真最佳光纤长度 MD):g @  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 \; voBU  
    ; 5:"Transition Cross-sections"    !不同波长的跃迁横截面,横坐标波长,纵坐标为横截面 +^<s'  
    { 1eW*9  
    include"Units.inc"         !读取“Units.inc”文件中内容 <rihi:4K  
    \Ota~A  
    include"Tm-silicate.inc"    !读取光谱数据 PyoIhe&ep  
    d=nv61]  
    ; Basic fiberparameters:    !定义基本光纤参数 $2E&~W %  
    L_f := 4 { fiberlength }      !光纤长度 NNxz Z!q!  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 a.z)m} +  
    r_co := 6 um { coreradius }                !纤芯半径 a$=He   
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 12VSzIm  
    Y'^+ KU  
    ; Parameters of thechannels:                !定义光信道 F$j?}  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm ^O3i)GO  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 Et! 6i7`]  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W ["_+~*  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um ],~H3u=s3  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 2C Fgit  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 Xaw ~Hh)  
    ,p>@:C/M  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm p:;`X!  
    w_s := 7 um                          !信号光的半径 [gDl<6a#4  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 %M*2j%6  
    loss_s := 0                            !信号光寄生损耗为0 b%QcB[k[WB  
    |{ @BH  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 Z8ds`KZM  
    *.6m,QqJ(  
    ; Function for defining themodel:   !定义模型函数,一定要有calc命令,否则函数只会被定义,但不会被执行 r3NdE~OAi  
    calc {%oxzdPc  
      begin t2(vtxrt  
        global allow all;                   !声明全局变量 !%'"l{R  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 P~*'/!@  
        add_ring(r_co, N_Tm); (nwp s  
        def_ionsystem();              !光谱数据函数 #OlPnP2  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 &Nw[J5-"k  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 O+?vQ$z  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 74=zLDDS  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 4(dgunP  
        finish_fiber();                                   n%6ba77  
      end; xpp>5d !  
    7Bym?  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 fXe$Ug|5a  
    show "Outputpowers:"                                   !输出字符串Output powers: v,kvLjqt  
    show"pump:     ", P_out(pump):d3:"W"  !输出字符串pump:和计算值(格式为3个有效数字,单位W) f28bBuv1?  
    show"signal:   ",P_out(signal_fw):d3:"W" !输出字符串signal:和计算值(格式为3个有效数字,单位W) (]` rri*^  
    twox.@"U  
    xE rAs}|  
    ; ------------- FeNNzV=  
    diagram 1:                   !输出图表1 7]_zWx,r  
    RF= $SMTk  
    "Powers vs.Position"          !图表名称 j[A:So  
    \hWac%#  
    x: 0, L_f                      !命令x: 定义x坐标范围 NX5$x/uz  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 "Hk7s+%  
    y: 0, 15                      !命令y: 定义y坐标范围 :=*V i`  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 3RF`F i  
    frame          !frame改变坐标系的设置 J@OK"%12  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) g2?yT ?  
    hx             !平行于x方向网格 k;Fxr%  
    hy              !平行于y方向网格 0YC|;`J  
    "d`u#YmR  
    f: P(pump, x),    !命令f: 定义函数图;P(pump, x)函数是计算x位置处的泵浦光功率 x!6<7s  
      color = red,  !图形颜色 n1x"B>3  
      width = 3,   !width线条宽度 y'!"GrbZ  
      "pump"       !相应的文本字符串标签 p=m:^9/  
    f: P(signal_fw, x),  !P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 <Uc  
      color = blue,     ~9PZ/( '  
      width = 3, 4Y{;%;-i  
      "fw signal" I_ AFHrj  
    f: P(signal_bw, x),   !P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 91-[[<  
      color = blue, 8Wo!NG:V5  
      style = fdashed, dvM%" k  
      width = 3, mL-6+pJ@  
      "bw signal" H>Ucmd;ay  
    6a<zZO`Z6+  
    f: 100 * n(x, 2),    !n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 &;sW4jnt  
      yscale = 2,            !第二个y轴的缩放比例 hV+=hX<h  
      color = magenta, ~uV(/?o%  
      width = 3, \8g= Ix  
      style = fdashed, MxH |yo[  
      "n2 (%, right scale)" I9dX\w}  
    S503b*pM  
    f: 100 * n(x, 3),          !n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比 >=:^N-a  
      yscale = 2, tyWDa$u,u  
      color = red, UmArl)R/  
      width = 3, T2n3g|4  
      style = fdashed, ; !C_}P  
      "n3 (%, right scale)" |MOz> 1<a  
    2m"cK^  
    ! ,0  
    ; ------------- -$X4RS  
    diagram 2:                    !输出图表2 G8 q<)  
    , 6Jw   
    "Variation ofthe Pump Power" K9]zUe&#w  
    hzU(XW  
    x: 0, 10 ^KnK \  
    "pump inputpower (W)", @x d"n"A?nXh  
    y: 0, 10 ef)zf+o  
    y2: 0, 100 1*|/N}g)  
    frame 1Vx5tOq  
    hx [ [pt~=0  
    hy IA{W-RRb  
    legpos 150, 150 >t<\zC|~w  
    "$aoIXv  
    f: (set_P_in(pump, x);P_out(signal_fw)), !set_P_in(pump,x)改变泵浦信道功率;P_out(signal_fw)输出前向信号光 T:Ovh.$  
      step = 5, hsT&c|  
      color = blue, A2;6Vz=z  
      width = 3, -SfU.XlZl  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 bdLi _k  
      finish set_P_in(pump, P_pump_in) L`e19I$  
    d S'J@e=#  
    f: (set_P_in(pump,x); 100 * n_av(2)),   !改变泵浦信号功率对能级2上激活粒子占比的影响 Nu OxEyC  
      yscale = 2, U82mO+}  
      step = 5, )0]U"Nf ho  
      color = magenta, #vhN$H:&q  
      width = 3, N'-[>w7vK2  
      "population of level 2 (%, rightscale)", znPh7{|<  
      finish set_P_in(pump, P_pump_in) /%s:aO  
    H9PnJr8 \  
    f: (set_P_in(pump,x); 100 * n_av(3)),   !改变泵浦信号功率对能级3上激活粒子占比的影响 4P"bOt5izR  
      yscale = 2, *nHuGla  
      step = 5, jd,i=P%  
      color = red, ZHa>8x;Mjl  
      width = 3, 6}?d%K  
      "population of level 3 (%, rightscale)", 01n132k  
      finish set_P_in(pump, P_pump_in) cs ?WE9N  
    > <Zu+HX  
    uo J0wG.  
    ; ------------- lixM0  
    diagram 3:                         !输出图表3 vy7/  
    1DhC,)+D}q  
    "Variation ofthe Fiber Length" c{_JPy  
    gua7<z6=eh  
    x: 0.1, 5 zTj ie  
    "fiber length(m)", @x $A-X3d;'\/  
    y: 0, 10 l_yF;5|?z  
    "opticalpowers (W)", @y )dqNN tS  
    frame (3lA0e`Y  
    hx ]wdE :k,D  
    hy CoNaGb  
    '?mF,C o{  
    f: (set_L(x);P_out(signal_fw)),     !改变光纤长度对信号光输出功率的影响 F]PsS(  
      step = 20,             6% ofS8 [  
      color = blue, ^/#G,MxNy  
      width = 3, ooUVVp  
      "signal output" lZ.lf.{F  
    7U_ob"`JV  
    ;f: (set_L(x);P_out(pump)),                     !改变光纤长度对泵浦信号输出功率的影响 *d;TpwUI  
       step = 20, color = red, width = 3,"residual pump" {_\cd.AuT  
    d+,!p8Q  
    ! set_L(L_f) {restore the original fiber length } lFnYQab  
    !5C"`@}q>  
    <<CWN(hQWO  
    ; ------------- t@9-LYbL  
    diagram 4:                                  !输出图表4 & ]] l0B  
    P1T {5u!T  
    "TransverseProfiles" Wm`*IBWA  
    T|wz%P<J  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) h=gtuaR4  
    *bf 5A9  
    x: 0, 1.4 * r_co /um GRbbU#/=G  
    "radialposition (µm)", @x v N\[2r%S  
    y: 0, 1.2 * I_max *cm^2 l^nvwm`f#:  
    "intensity (W/ cm&sup2;)", @y #gO[di0WhC  
    y2: 0, 1.3 * N_Tm k|?[EWIi^  
    frame ?%UiW7}j';  
    hx wCg7JW#  
    hy 3PZ(Kn<  
    k[ zyR  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 qvB{vU  
      yscale = 2, &Wcz~Gx3Q  
      color = gray, su%-b\8K  
      width = 3, 9!Q ZuZY  
      maxconnect = 1, Ht(TYq  
      "N_dop (right scale)" g^(gT  
    Wn+s:o v  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 f^B'BioW(  
      color = red, X+N5iT  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 `| ?<KF164  
      width = 3, 8`urkEI^r  
      "pump" *)-@'{]uB  
    $j\>T@  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 V~j^   
      color = blue, }bca-|N  
      maxconnect = 1, # euG$(  
      width = 3, >_ZEQC  
      "signal" SA}Dkt&,  
    [;Lgbgt3f  
    'LPyh ;!f  
    ; ------------- +] ;WN  
    diagram 5:                                  !输出图表5 +5*bU1}O  
    \{:A&X~\!  
    "TransitionCross-sections" {c9 f v H  
    9X 4[Zk  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) re[5lFQ~Z  
    By8SRWs  
    x: 1450, 2050 ZBpcC0 z  
    "wavelength(nm)", @x 1bQO:n):~  
    y: 0, 0.6 8Lx/ZGy  
    "cross-sections(1e-24 m&sup2;)", @y 5uQ+'*xN%  
    frame \]f+{d- &  
    hx 9)W3\I>U-  
    hy $Bz};@  
    M9R'ONYAa  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 wB0vpt5f  
      color = red, ~9FL]qo  
      width = 3, "NLuAB. P  
      "absorption" EGt 50  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 z~vcwiYAP  
      color = blue, "[?DS  
      width = 3, jOzXyDq  
      "emission" Yft [)id  
    u'#/vT#l  
     
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    只看该作者 1楼 发表于: 2021-09-28
    感谢,视频上有点看不清楚