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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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    离线小火龙果
     
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    只看楼主 倒序阅读 楼主  发表于: 2020-05-28
    (* ~KK 9aV{  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, <Ij!x`MS+  
    pumped at 790 nm. Across-relaxation process allows for efficient 9#LMK 1ge  
    population of theupper laser level. GqFx^dY4*  
    *)            !(*  *)注释语句  *7Dba5B  
    tMr7d  
    diagram shown: 1,2,3,4,5  !指定输出图表 npP C;KD  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 *0WVrM06?  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 .soCU8i3  
    ; 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 _ %s#Cb  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 W? 7l-k=S  
    ; 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 "EW8ll7r  
    FOaA}D `]  
    include"Units.inc"         !读取“Units.inc”文件中内容  %zavSm"  
    $+gQnI3w  
    include"Tm-silicate.inc"    !读取光谱数据 !3Dq)ebBz  
    4^_6~YP7  
    ; Basic fiberparameters:    !定义基本光纤参数 ,CE/o7.FG  
    L_f := 4 { fiberlength }      !光纤长度 =4y gbk  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 D(cD8fn,J  
    r_co := 6 um { coreradius }                !纤芯半径 ?y>N&\pt2  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 68%aDs  
    IrwQ~z3I  
    ; Parameters of thechannels:                !定义光信道 c '|*{%<e2  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm egmUUuO  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 7T[~~V^x  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W !E70e$Th  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um sA0 Ho6  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 AR"2?2<mJ7  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 m l`xLZN>L  
    ^0,}y]5p  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm .5JIQWE(  
    w_s := 7 um                          !信号光的半径 8jK=A2pTa  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 1nVQYqT_  
    loss_s := 0                            !信号光寄生损耗为0 ]l7W5$26 @  
    +]l?JKV  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 YOxgpQ:i  
    q|5WHB  
    ; Function for defining themodel:   !定义模型函数,一定要有calc命令,否则函数只会被定义,但不会被执行 SH*'<  
    calc *i#2>=)  
      begin /08FV|tX)  
        global allow all;                   !声明全局变量 ;H$ Cq' I  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 O{:{P5  
        add_ring(r_co, N_Tm); " <bjS  
        def_ionsystem();              !光谱数据函数 z:'m50'  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 -:}vf?  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 pj'gTQ),0  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 3 9 8)\3o  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 KFM[caKeJO  
        finish_fiber();                                   r#-  
      end; 'afW'w@  
    tqZ91QpW  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 zD_5TG M=  
    show "Outputpowers:"                                   !输出字符串Output powers: \Z*:l(  
    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) Ff<cY%t  
    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) as07~Xvp-  
    $W._FAAJ#  
    `&;#A*C0  
    ; ------------- q/U-WQ<+  
    diagram 1:                   !输出图表1 hB?#b`i^  
    '! >9j,BJ  
    "Powers vs.Position"          !图表名称 Owp]>e  
    DpHubqWz  
    x: 0, L_f                      !命令x: 定义x坐标范围 +Q&l}2  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 A-x^JC=  
    y: 0, 15                      !命令y: 定义y坐标范围 at>_EiS  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 UG vIHm  
    frame          !frame改变坐标系的设置 r*HSi.'21  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) ,~L*N*ML  
    hx             !平行于x方向网格 =i~ = |K!  
    hy              !平行于y方向网格 -J]?M  
    W83d$4\d  
    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 4DIU7#GG  
      color = red,  !图形颜色 t/i*.>7  
      width = 3,   !width线条宽度 St;9&A  
      "pump"       !相应的文本字符串标签 /X8a3Eqp9  
    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 S iNgV\('U  
      color = blue,     !&%KJS6p4  
      width = 3, V7$ m.P#uM  
      "fw signal" j)i c7 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 Vy& X1lG:  
      color = blue, f:j:L79}  
      style = fdashed, P IG,a~  
      width = 3, (~|)Gmq2  
      "bw signal" \:'GAByy  
    j ,rc9  
    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 ~HY)$Yp;  
      yscale = 2,            !第二个y轴的缩放比例 Dw=L]i :0v  
      color = magenta, 5|0}bv O  
      width = 3, l@4pZkdq  
      style = fdashed, DzC`yWstP  
      "n2 (%, right scale)" jS,Pu%fR  
    AB $N`+&  
    f: 100 * n(x, 3),          !n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比 f y|JE9Io_  
      yscale = 2, U/c+j{=~  
      color = red, |@d(2f8  
      width = 3, X&Oo[Z  
      style = fdashed, 03?ADjO  
      "n3 (%, right scale)" :M6|V_Yp  
    h`Jc%6o  
    (R=ZI  
    ; ------------- "'B DVxp'w  
    diagram 2:                    !输出图表2 R14&V1 tZ  
    j1Ys8k%$l  
    "Variation ofthe Pump Power" 3 EAr=E]  
    LBio$67F  
    x: 0, 10 $%U}k=-  
    "pump inputpower (W)", @x  7]@M  
    y: 0, 10 3SM'vV0[  
    y2: 0, 100 %n]jsdE^|  
    frame ]:ca=&>  
    hx 9f['TG,"  
    hy t:dvgRJt*  
    legpos 150, 150 ?23J(;)s  
    DN9x<%/-  
    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 \*PE#RB#6  
      step = 5, VI3fvGHat{  
      color = blue, j gV^{8qG  
      width = 3, TaF*ZT2  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 h-.^*=]R6  
      finish set_P_in(pump, P_pump_in) z:UkMn[  
    ym p*:lH(  
    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 j %MY6"  
      yscale = 2, VK9E{~0=  
      step = 5, uP7|#>1%  
      color = magenta, r:xg#&"*  
      width = 3, gISA13  
      "population of level 2 (%, rightscale)", H/f}t w  
      finish set_P_in(pump, P_pump_in) 8<Nz34Y  
    C&q}&=3r  
    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 HJr*\%D}1  
      yscale = 2, XffHF^l9F  
      step = 5, q.:a4w J  
      color = red, Gj#BG49g2  
      width = 3, <)cmI .J3  
      "population of level 3 (%, rightscale)", sS)tSt{C  
      finish set_P_in(pump, P_pump_in) +=`w  
    a"+/fC`  
    8}z PDs  
    ; ------------- :U1V 2f'l3  
    diagram 3:                         !输出图表3 1_~'?'&^  
    HDo=WqG  
    "Variation ofthe Fiber Length" 54JI/!a  
    Q<osYO{l  
    x: 0.1, 5 11J:>A5zt  
    "fiber length(m)", @x 7|m{hSc  
    y: 0, 10 9Up> e  
    "opticalpowers (W)", @y .Gno K?  
    frame e mq%" ;.  
    hx =0@o(#gM  
    hy }Ny~.EV5^  
    (_q&QI0{  
    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 a 0FU[*q  
      step = 20,             Qe<c@i"  
      color = blue, :Ea ]baM"  
      width = 3, Dx3Sf}G `  
      "signal output" KueI*\ p  
    (w'k\y  
    ;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 .Vq_O u  
       step = 20, color = red, width = 3,"residual pump" is- {U? -  
    M+Y^A7  
    ! set_L(L_f) {restore the original fiber length } iL IKrU+`  
    /3vj`#jD  
    j%0 g *YI  
    ; ------------- 9e 1KH'  
    diagram 4:                                  !输出图表4 c_2kHT  
    1n ZE9;o  
    "TransverseProfiles" 6? (8KsaN  
    `^E(P1oJ3  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) *Oe;JqQkK  
    -E!V;Tgc%U  
    x: 0, 1.4 * r_co /um #KSB%  
    "radialposition (µm)", @x X?"Ro`S  
    y: 0, 1.2 * I_max *cm^2 M7lMOG (\  
    "intensity (W/ cm&sup2;)", @y [C~{g#  
    y2: 0, 1.3 * N_Tm 2TC7${^9}J  
    frame "V_PWEi  
    hx Yc'7F7.<6  
    hy z3}4 +~~  
    lO|H:7  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 5h(] S[Zf3  
      yscale = 2, Ib4 8`  
      color = gray, u RNc9  
      width = 3, k@R)_,2HH  
      maxconnect = 1, W,n0'";')  
      "N_dop (right scale)" My'6 yQL  
    ?3i-wpzMp  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 hAZ"M:f  
      color = red, ]pA}h. R#-  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 k4-C*Gx$h  
      width = 3, {=d\t<p*n  
      "pump" mY1$N}8fm  
    BPKeG0F7  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 : XZ  
      color = blue, m; LeaD}0  
      maxconnect = 1, LNU9M>  
      width = 3, BO ^T :  
      "signal" o'  DXd[y  
    oM-@B'TK  
    pr-!otz  
    ; ------------- MgLz:2 :F  
    diagram 5:                                  !输出图表5 f;%4O'  
    N1!|nS3w  
    "TransitionCross-sections" Hw/1~O$T  
    Hca)5$yL  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) ji2if.t@  
    [XQoag;!  
    x: 1450, 2050 ;z7iUke0%  
    "wavelength(nm)", @x vexQP}N0  
    y: 0, 0.6 AuU:613]W8  
    "cross-sections(1e-24 m&sup2;)", @y gGdZ}9  
    frame uoKC+8GA  
    hx P>kS$U)  
    hy #,qikKjt2  
    @,sg^KB  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 femAVx}go  
      color = red, _"F(w"|  
      width = 3, Wm.SLr,o0  
      "absorption" ?Zoq|Q+  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 A\.M/)Qo  
      color = blue, YKUs>tQ!  
      width = 3, kF.PLn'iS  
      "emission" crC];LMl/  
    D1lHq/  
     
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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