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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 正序阅读 楼主  发表于: 2020-05-28
    (* <?h(Dchq  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, @ 6*eS+t\  
    pumped at 790 nm. Across-relaxation process allows for efficient h+w1 D}*  
    population of theupper laser level. f#-\*  
    *)            !(*  *)注释语句 =3PZGdWD  
    q#K0EAgC  
    diagram shown: 1,2,3,4,5  !指定输出图表 c3WF!~1r  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 8%p+:6kP5  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响  Q.Y6  
    ; 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 ,{_56j^d,  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 EqOhzII^  
    ; 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 /Mj|Px%  
    j Q8 T  
    include"Units.inc"         !读取“Units.inc”文件中内容 >^SQrB   
    TN<"X :x9  
    include"Tm-silicate.inc"    !读取光谱数据 &{q<  
    EyHL&  
    ; Basic fiberparameters:    !定义基本光纤参数 u+c2 m  
    L_f := 4 { fiberlength }      !光纤长度 KN&|&51p}  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 >1HXC2 Y  
    r_co := 6 um { coreradius }                !纤芯半径 k> ~D  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 *VUJ);7k  
    MRT<hB  
    ; Parameters of thechannels:                !定义光信道 J+wnrGoK  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm b5? kgY  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 r.c:QY$  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W rr>6;  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um g ;X K3R  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 ?)Je%H  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 Df$~=A}  
    {XV 'C @B  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm "~KTLf  
    w_s := 7 um                          !信号光的半径 )u0 /s'  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 =E-o@#BS  
    loss_s := 0                            !信号光寄生损耗为0 :ciD!Ly  
    2`A[<S  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 1$^r@rP  
    uo(LZUjPbN  
    ; 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 nWh f  
    calc >CwI(vXn  
      begin %*RZxR):  
        global allow all;                   !声明全局变量 '&$zgK9T?  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 ;f=.SJF  
        add_ring(r_co, N_Tm); ?}= $zN  
        def_ionsystem();              !光谱数据函数 N#@v`S  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 N^AlhR^  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 #w8.aNU+]  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 tI5*0  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 P@% L.y B  
        finish_fiber();                                   ~Q5]?ZNX  
      end; c= ?Tu  
    rq1zvuUx  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 0uIBaW3s  
    show "Outputpowers:"                                   !输出字符串Output powers: |?hsMN  
    show"pump:     ", P_out(pump):d3:"W"  !输出字符串pump:和计算值(格式为3个有效数字,单位W) \tY7Ga%c  
    show"signal:   ",P_out(signal_fw):d3:"W" !输出字符串signal:和计算值(格式为3个有效数字,单位W) FYb]9MX  
    L+eK)Q  
    keStK8  
    ; ------------- IkxoW:L  
    diagram 1:                   !输出图表1 FlY"OU*  
    1QnaZhu'  
    "Powers vs.Position"          !图表名称 Zv* uUe  
    [Dmf.PUe  
    x: 0, L_f                      !命令x: 定义x坐标范围 N vTp1kI]  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置  vNdW.V}  
    y: 0, 15                      !命令y: 定义y坐标范围 ooP{Q r  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 J25/Iy*byG  
    frame          !frame改变坐标系的设置 8 qZbsZi4  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) Om_ "X6  
    hx             !平行于x方向网格 -Owb@Nw  
    hy              !平行于y方向网格 ] mK{E~Zll  
    K<%8.mZ7  
    f: P(pump, x),    !命令f: 定义函数图;P(pump, x)函数是计算x位置处的泵浦光功率 TtQd#mSI\  
      color = red,  !图形颜色 XqwP<5Z  
      width = 3,   !width线条宽度 EMdU4YnE"  
      "pump"       !相应的文本字符串标签 k_?~@G[I  
    f: P(signal_fw, x),  !P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 DF'~ #G8  
      color = blue,     E>O@Bv  
      width = 3, 7|"$YV'DM  
      "fw signal" c%&*yR  
    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 25r3[gX9`  
      color = blue, J3B+WD]  
      style = fdashed, .ud&$-[a  
      width = 3, N9M",(WTt}  
      "bw signal" rFUd  
    zAev@+.ld  
    f: 100 * n(x, 2),    !n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 :bL^S1et  
      yscale = 2,            !第二个y轴的缩放比例 wF59g38[z$  
      color = magenta, =h+-1zp{M^  
      width = 3, oa[O~z{~  
      style = fdashed, kV8qpw}K  
      "n2 (%, right scale)" NzN"_ojM  
    KTAQ6k  
    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 '(ZT }N  
      yscale = 2, m9 ]Ge]  
      color = red, 2L51 H(  
      width = 3, ps:E(\  
      style = fdashed, DJqJ6z:'  
      "n3 (%, right scale)" sE!g!ht  
    }]<|`FNc  
    4r86@^c*  
    ; ------------- rV?@Kgxi  
    diagram 2:                    !输出图表2 1N5lI97j  
    DbtkWq%  
    "Variation ofthe Pump Power" Eb CK9  
    2Uu!_n}tNF  
    x: 0, 10 }wI +e Mr  
    "pump inputpower (W)", @x 7s;;2<k;_  
    y: 0, 10 =EU;%f  
    y2: 0, 100 WGyPyG#Fl  
    frame !1UZ<hq  
    hx ,4B8?0sH|  
    hy BWB}bq  
    legpos 150, 150 E]S:F3  
    x|()f 3{.  
    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 r`RLDN!`  
      step = 5, }9!}T~NMs  
      color = blue, <Q`3;ca^  
      width = 3, ou`KkY||  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 8U7d d[  
      finish set_P_in(pump, P_pump_in) tCPK_Wws?Z  
    4]-7S l,  
    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 3\C+g{}e  
      yscale = 2, 3Wx\Liw,  
      step = 5, SMfa(+VI  
      color = magenta, EB6X Yr  
      width = 3, F[W0gjUc  
      "population of level 2 (%, rightscale)", koE]\B2A6  
      finish set_P_in(pump, P_pump_in) BN&}g}N  
    ;:>q;%  
    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 m`]d`%Ex  
      yscale = 2, 8HHR  
      step = 5, %az6\"n  
      color = red, oTcf[<   
      width = 3, W5~!)Ec  
      "population of level 3 (%, rightscale)", kLpq{GUv:  
      finish set_P_in(pump, P_pump_in) !4 lN[  
    :VLYF$|  
    _+~&t9A!  
    ; ------------- "<%J^Z9G  
    diagram 3:                         !输出图表3 ,|,kU0xXz  
    G2+ gEg  
    "Variation ofthe Fiber Length" Ww#!-,*]o  
    B7'yc`)H  
    x: 0.1, 5  obPG]*3  
    "fiber length(m)", @x p{ ``a=  
    y: 0, 10 U;"J8  
    "opticalpowers (W)", @y ASr@5uFR  
    frame n.R"n9v`  
    hx E\cX  
    hy 3f~znO  
    V7O7"Q^q  
    f: (set_L(x);P_out(signal_fw)),     !改变光纤长度对信号光输出功率的影响 Np+pJc1  
      step = 20,             475g-t2"@  
      color = blue, i->G {_gH  
      width = 3, ?[Ma" l>  
      "signal output" i&DUlmt)f  
    rR#wbDr5  
    ;f: (set_L(x);P_out(pump)),                     !改变光纤长度对泵浦信号输出功率的影响 >J)4e~9EJ2  
       step = 20, color = red, width = 3,"residual pump" eV }H  
    "pH;0[r]  
    ! set_L(L_f) {restore the original fiber length } h(4\k?C5  
    4mpcI  
    6K=}n] n  
    ; ------------- N%1nii  
    diagram 4:                                  !输出图表4 D";clP05K  
    zAJC-YC6  
    "TransverseProfiles" Fdq5:v?k  
    /q'-.-bo  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) *19a\m=>oi  
    x-4d VKE*z  
    x: 0, 1.4 * r_co /um #CB Kt,  
    "radialposition (µm)", @x nNnfcA&W  
    y: 0, 1.2 * I_max *cm^2 .C ,dV7  
    "intensity (W/ cm&sup2;)", @y 9- 24c  
    y2: 0, 1.3 * N_Tm 1rLxF{,  
    frame K]|hkp&  
    hx 0<fQjXn  
    hy lQm7`+  
    +>$Kmy[3  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 Z5EII[=$o  
      yscale = 2, :hR^?{9Z4>  
      color = gray, xh!T,|IR  
      width = 3, h]&~yuI>  
      maxconnect = 1, t}OzF cyqN  
      "N_dop (right scale)" =wD&hDn4  
    :_,3")-v  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 y|3("&)"S  
      color = red, r)Ml-r =  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 Pj{I} 4P`  
      width = 3, P.1Z@HC  
      "pump" e#F3KLSL`  
    uf:'"7V7  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 ,^eOwWV  
      color = blue, Hc8!cATQk  
      maxconnect = 1, 2:e7'}\D.  
      width = 3, EV-# E  
      "signal" &yOl}?u  
    7+hc?H[&'  
    , E$f"  
    ; ------------- \pSRG=`  
    diagram 5:                                  !输出图表5 2d  YU  
    Z J1@z.  
    "TransitionCross-sections" L&uPNcZ`-  
    U:[CcN/~3  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) cjd-B:l  
    @uG/2'B(  
    x: 1450, 2050 x;LO{S4Z  
    "wavelength(nm)", @x B7o US}M  
    y: 0, 0.6 Wvl'O'R  
    "cross-sections(1e-24 m&sup2;)", @y L;+e)I]  
    frame c+8 Y|GB  
    hx h,b_8g{!  
    hy j_0l'Saj  
    Be<bBKQb  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 (|3?wX'2U  
      color = red, M8y|Lm}o  
      width = 3, 9F~5Ht  
      "absorption" wjT#D|soI  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 \]\h,Y8  
      color = blue, WH fl|e  
      width = 3, cHVu6I?h  
      "emission" ~SsfkM"  
    6wXy;!2  
     
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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