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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
    (* [q?RJmB]  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, XjN4EDi+E  
    pumped at 790 nm. Across-relaxation process allows for efficient v])ew|  
    population of theupper laser level. =5\*Zh1  
    *)            !(*  *)注释语句 ^K<3_D>1>  
    r'*$'QY-N  
    diagram shown: 1,2,3,4,5  !指定输出图表 /i,n75/y?  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 SI!A?34  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 gQPw+0w  
    ; 3:"Variation of the Fiber Length"!信号输出功率vs 光纤长度的变化,仿真最佳光纤长度 `D77CC]vU  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 ef`_ n+`  
    ; 5:"Transition Cross-sections"    !不同波长的跃迁横截面,横坐标波长,纵坐标为横截面 +Hu\b&g  
    h+W$\T)  
    include"Units.inc"         !读取“Units.inc”文件中内容 2f[;U"  
    I}_}VSG(  
    include"Tm-silicate.inc"    !读取光谱数据 A08kwYxiW  
    Y%?S:&GH  
    ; Basic fiberparameters:    !定义基本光纤参数 qofAA!3z  
    L_f := 4 { fiberlength }      !光纤长度 }b\hRy~=r  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 w0~%,S  
    r_co := 6 um { coreradius }                !纤芯半径 VM%g QOo<  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 INA3^p'w  
    v[Q)L!J1  
    ; Parameters of thechannels:                !定义光信道 r? /Uu &  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm -P}A26qB  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 %M iv8  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W 1 sHjM %  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um +*8su5:[&@  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 wyy 1M+  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 *a Z1 4  
    ^)-[g  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm  >:-e  
    w_s := 7 um                          !信号光的半径 '{ _ X1  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 ^sf,mM~D  
    loss_s := 0                            !信号光寄生损耗为0 u+j\PWOtm  
    Rge>20uTl$  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 iAz0 A  
    N (4H}2  
    ; 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 8._uwA<[  
    calc Cx2# 0$  
      begin r-y;"h'  
        global allow all;                   !声明全局变量 VO0:4{-  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 2fTuIS<yr  
        add_ring(r_co, N_Tm); Vkg0C*L_  
        def_ionsystem();              !光谱数据函数 G=zNZ  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 Eiu/p&ct  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 KA?}o^-F  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道  JQQ[jl;  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 #4Z e2T|  
        finish_fiber();                                   _RaE: )  
      end; -FJ3;fP&  
    h r];!.Fv  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 h^ Cm\V  
    show "Outputpowers:"                                   !输出字符串Output powers: M G$+Blw>  
    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) [h'u@%N|/  
    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) 0OM^,5%8  
    WK6,K92  
    c]u ieig0~  
    ; ------------- ZPH_s^  
    diagram 1:                   !输出图表1 ;O}%SCF7  
    gO8d2?Oh  
    "Powers vs.Position"          !图表名称 W4o8]&A  
    ;<M}ZL@m  
    x: 0, L_f                      !命令x: 定义x坐标范围 uA#K59E+  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 H0s*Lb  
    y: 0, 15                      !命令y: 定义y坐标范围 oJ4HvrUO  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 vL@<l^`$0  
    frame          !frame改变坐标系的设置  2 q4p-  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) t)&U'^  
    hx             !平行于x方向网格 a>OYJe  
    hy              !平行于y方向网格 )7 Mss/2T  
    !MKecRG_  
    f: P(pump, x),    !命令f: 定义函数图;P(pump, x)函数是计算x位置处的泵浦光功率 ;0Z-  
      color = red,  !图形颜色 u1 Q;M`+>  
      width = 3,   !width线条宽度 ;}SGJ7  
      "pump"       !相应的文本字符串标签 &za }TH m  
    f: P(signal_fw, x),  !P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 )7& -DI1  
      color = blue,     9I/l+IS"X  
      width = 3, +g g_C'"  
      "fw signal" TO.b- ;  
    f: P(signal_bw, x),   !P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 b WNa6x  
      color = blue, K[icVT2v~  
      style = fdashed, G*4I;'6  
      width = 3, W\~ie}D{  
      "bw signal" Wo "s;Z  
    j{Px}f(=  
    f: 100 * n(x, 2),    !n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 684& H8  
      yscale = 2,            !第二个y轴的缩放比例 P4#i]7%  
      color = magenta, ~6;I"0b5  
      width = 3, D\_nqx9O  
      style = fdashed, |J!mM<*K  
      "n2 (%, right scale)" Zye04&x9k  
    R>0[w$  
    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 /ugWl99.W  
      yscale = 2, ~-k , $J?7  
      color = red, %e]G]B%  
      width = 3, 7K.75%}  
      style = fdashed, JH\:9B+:L  
      "n3 (%, right scale)" )xy>:2!#Y  
    rci,&>L"  
    Rj";?.R*e  
    ; ------------- GM2}]9  
    diagram 2:                    !输出图表2 b\0>uU  
    Z5'^81m$o  
    "Variation ofthe Pump Power" R Th=x.  
    R:f!ywj%  
    x: 0, 10 )G)6D"5,+G  
    "pump inputpower (W)", @x trDw|WA  
    y: 0, 10 Zp/+F(  
    y2: 0, 100 J>v[5FX+  
    frame 8e-nzc,]  
    hx JlnmG<WLT  
    hy 82@^vX  
    legpos 150, 150 Zy+ERaF|]  
    F{jxs/~  
    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 F9eEQ{L  
      step = 5, c~tl0XU1  
      color = blue, %w^*7Oi  
      width = 3, :O413#8  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 T */I4"  
      finish set_P_in(pump, P_pump_in) {A==av  
    =W7-;&  
    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 |aLK_]!  
      yscale = 2, ei4LE XQ16  
      step = 5, h"ZIh= j@  
      color = magenta, ^"7- `<J  
      width = 3, bdWdvd:  
      "population of level 2 (%, rightscale)", FXo.f<U  
      finish set_P_in(pump, P_pump_in) he~8V.$  
    eOb--@~8  
    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 ^5s7mls  
      yscale = 2, !U% |pa  
      step = 5, B(M-;F  
      color = red, b|-)p+ba  
      width = 3, `T*Y1@FV  
      "population of level 3 (%, rightscale)", ?'~u)O(n  
      finish set_P_in(pump, P_pump_in) pG"wQ  
    .hH_1Mo8  
    MDytA0M  
    ; ------------- XB!qPh .  
    diagram 3:                         !输出图表3 c/+6M  
    aUNA` L  
    "Variation ofthe Fiber Length" #~'d Y\&  
    =l:V9u-I^  
    x: 0.1, 5 u)Kiwa  
    "fiber length(m)", @x [KR%8[e  
    y: 0, 10 BR|0uJ.M  
    "opticalpowers (W)", @y *jhgCm  
    frame I;rW!Hb  
    hx ifS#9N|8  
    hy JRC2+BU /  
    eW 4[2Q  
    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 9^DAlY,x.  
      step = 20,             4AEw[(t  
      color = blue, |9XoRGgXU  
      width = 3, m4~ |z  
      "signal output" EeMKo  
    =iB[sLEJ  
    ;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 zlP{1z;nV  
       step = 20, color = red, width = 3,"residual pump" G~y:ZEnN[  
    +JYb)rn$^  
    ! set_L(L_f) {restore the original fiber length } Wi=zu[[qc  
    H<!q@E ;  
    i tNuY<"  
    ; ------------- Vj4 h#NN$  
    diagram 4:                                  !输出图表4  d;>G  
    Jvc<j:{^w  
    "TransverseProfiles" b4wT3  
    /1Gmga5  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) gpyio1V>  
    B`)sc ~u  
    x: 0, 1.4 * r_co /um WYF8?1dt +  
    "radialposition (µm)", @x A5F (-  
    y: 0, 1.2 * I_max *cm^2 &-FG}|*4M  
    "intensity (W/ cm&sup2;)", @y >"IG\//I  
    y2: 0, 1.3 * N_Tm 1c QF(j_  
    frame J>#hu3&UOQ  
    hx Q&PWW#D  
    hy )SP"V~^Wn  
    muXP5MO  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 \mLEwNhRY  
      yscale = 2, &I=o1F2B)  
      color = gray, o:v_I{  
      width = 3, -zYa@PW  
      maxconnect = 1, _R(ZvsOZ  
      "N_dop (right scale)" |pZ7k#%  
    q !9;JrX  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 h8O\sKn  
      color = red, w=?nD6Xhz  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 j5R0e}/r  
      width = 3, l'4<^q  
      "pump" B.4e4%BBS  
    3mofp`e  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 ]e-QNI  
      color = blue, 93D}0kp  
      maxconnect = 1, &8f/6dq  
      width = 3, M/Z$?nd_H  
      "signal" 6<@+J  
    8F<|.V;  
    g$C]ln>"9m  
    ; ------------- =D0d+b6  
    diagram 5:                                  !输出图表5 pjS##pgVq  
    e;~(7/1  
    "TransitionCross-sections" &a'mG=(K_c  
    CvRCcSJM\2  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) l'[;q '  
    k@%5P-e}  
    x: 1450, 2050 p @q20>^u  
    "wavelength(nm)", @x a ub$4n!C9  
    y: 0, 0.6 UVLS?1ra  
    "cross-sections(1e-24 m&sup2;)", @y  nm`( ;<W  
    frame LiFR7\z  
    hx ?glx8@  
    hy kuBtPZ  
    |1 qrU(  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 ~sn3_6{  
      color = red, m4W (h6  
      width = 3, <(TAA15Xol  
      "absorption" J ?aJa  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 6'mZM=d  
      color = blue, @I1*b>X~<  
      width = 3,  Q'cWqr  
      "emission"  *`qI<]!  
     * ;Q#UH  
     
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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