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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
    (* \mt0mv;c  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, <3!jra,h  
    pumped at 790 nm. Across-relaxation process allows for efficient |!\(eLR9>  
    population of theupper laser level. V0]6F  
    *)            !(*  *)注释语句 wHQyMq^  
    J% B(4`  
    diagram shown: 1,2,3,4,5  !指定输出图表 NA,)FmQjk  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 6m$,t-f0b  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 T/V 5pYl  
    ; 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*o%#ZJN  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 &oWdBna"_  
    ; 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 F:8cd^d~u  
    F1@gYNbI,  
    include"Units.inc"         !读取“Units.inc”文件中内容 T/%s7!E  
    ;b[% L&  
    include"Tm-silicate.inc"    !读取光谱数据 1or4s{bmo  
    ?PIOuN=  
    ; Basic fiberparameters:    !定义基本光纤参数 *Mt's[8  
    L_f := 4 { fiberlength }      !光纤长度 pP&TFy#G+'  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 e1dT~l  
    r_co := 6 um { coreradius }                !纤芯半径 a& Ti44a[  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 89>U Koc?  
    (8<U+)[tPy  
    ; Parameters of thechannels:                !定义光信道 )w8h2=l  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm 9: bC{n  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 zY<=r.m4  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W m~fA=#l l  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um +h6c Aqm]  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 |wKC9O@%  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 ,y[wS5li  
    :[iWl8  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm i#t)tM"  
    w_s := 7 um                          !信号光的半径 Qa nE]  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 g/b_\__A  
    loss_s := 0                            !信号光寄生损耗为0 4VjP:>*p  
    F/\w4T  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 z?HP%g'M~  
    -.|V S|y  
    ; 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 ZJ9J*5!C  
    calc DiyviH  
      begin V `V Z[  
        global allow all;                   !声明全局变量 sXm/+I^  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 ?|8H|LBIr  
        add_ring(r_co, N_Tm); Y"&&=M#  
        def_ionsystem();              !光谱数据函数 QvK-3w;=  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 %aU4d e^  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道  ZqQJFyV*  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 DFKU?#R  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 p4;A[2Ot`:  
        finish_fiber();                                   )W!8,e+%  
      end; <wge_3W#  
    u/e-m/  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 vu[+UF\G  
    show "Outputpowers:"                                   !输出字符串Output powers: 'W 5r(M4U  
    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) PsTPGK#S  
    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) 9FT;?~,  
    oHkF>B [  
    vgSs]g  
    ; ------------- )6#dxb9  
    diagram 1:                   !输出图表1 j?ihUNY!+  
    C2;qSKG3{m  
    "Powers vs.Position"          !图表名称 "q(#,,_  
    JPQ[JD^]  
    x: 0, L_f                      !命令x: 定义x坐标范围 V-U,3=C  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 xmxfXW  
    y: 0, 15                      !命令y: 定义y坐标范围 D.H$4[u;j  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 Z 55iq  
    frame          !frame改变坐标系的设置 [vkz<sL"  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) E~5r8gM,0  
    hx             !平行于x方向网格 5 T1M:~u i  
    hy              !平行于y方向网格 p#W[he  
    0x!XE|7I  
    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 ]%jlaXb  
      color = red,  !图形颜色 7u]0dHj  
      width = 3,   !width线条宽度 AAjsb<P  
      "pump"       !相应的文本字符串标签 B5>h@p-UV  
    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 LC/9)Sh_n  
      color = blue,     N!>Gg|@~  
      width = 3, |e@9YDZ  
      "fw signal" pqO}=*v@  
    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 [H-,zY  
      color = blue, h% BA,C  
      style = fdashed, @e#eAJhU  
      width = 3, W8j)2nKD  
      "bw signal" DQM\Y{y|3  
    d?(#NP#;  
    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 S 8mqz.  
      yscale = 2,            !第二个y轴的缩放比例 qt5CoxeJ  
      color = magenta, l\7NR  
      width = 3, 'NF_!D  
      style = fdashed, [@Y<:6  
      "n2 (%, right scale)" Xxcv 5.ug  
    ItGi2'}  
    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 `T2RaWR4=  
      yscale = 2, [OBj2=  
      color = red, 8`Fo^c=j  
      width = 3, R,CFU l7Q  
      style = fdashed, WmTSxneo  
      "n3 (%, right scale)" dxbP'2~  
    -M}#-qwf  
    U2z1HIs  
    ; ------------- kxt@t#  
    diagram 2:                    !输出图表2 PLR[nB7K  
    RWtD81(oC'  
    "Variation ofthe Pump Power" ]5W0zNb*  
    a9PSg/p  
    x: 0, 10 PV vNu5k  
    "pump inputpower (W)", @x I=X-e#HM?  
    y: 0, 10 /gh=+;{  
    y2: 0, 100 Qi`Lj5;\F  
    frame yS0YWqv]6@  
    hx 5qtZ`1Hq  
    hy tjc3;9  
    legpos 150, 150 %7 h _D  
    @.ebQR-:H  
    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 @'`!2[2'?  
      step = 5, }N^.4HOS8  
      color = blue, mY?^]3-_  
      width = 3, cmF&1o3_  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 uc9t0]o=h  
      finish set_P_in(pump, P_pump_in) ]kA0C~4   
    YG ,  
    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 |SC^H56+  
      yscale = 2, 6j{9\ R  
      step = 5, MIvAugUOl  
      color = magenta, rlr)n\R#  
      width = 3, ScU?T<u:i  
      "population of level 2 (%, rightscale)", 0FmYM@Wc  
      finish set_P_in(pump, P_pump_in) T!e ]=  
    :GXiA  
    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 aOWW ..|  
      yscale = 2, braHWC'VYg  
      step = 5, HbQ `b  
      color = red, VqqI%[!Aw  
      width = 3, i-[ic!RnKj  
      "population of level 3 (%, rightscale)", s>(OK.o  
      finish set_P_in(pump, P_pump_in) >2tQ')%DJ  
    4E]w4BG)  
    M72.  
    ; ------------- X@KF}x's  
    diagram 3:                         !输出图表3 C o v,#j j  
    c?B@XIl  
    "Variation ofthe Fiber Length" "&*O7cs$pA  
    % LeG.~?  
    x: 0.1, 5 b,"gBg  
    "fiber length(m)", @x zu}oeAQc$  
    y: 0, 10 ! iuDmL  
    "opticalpowers (W)", @y - y[nMEE  
    frame m` ^o<V&  
    hx =W'a6)WE  
    hy *TQXE:vZ[  
    1'DD9d{ qN  
    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 "L^]a$&  
      step = 20,             9TRS#iVL+*  
      color = blue, ?g gl8bzA  
      width = 3, 0 `%eP5  
      "signal output" :VpRpj4f  
    o?(({HH  
    ;f: (set_L(x);P_out(pump)),                     !改变光纤长度对泵浦信号输出功率的影响 Z.6M~  
       step = 20, color = red, width = 3,"residual pump" 5/Viz`hsz  
    d-Vttxa6  
    ! set_L(L_f) {restore the original fiber length } S}6Ty2.\  
    +bpUb0.W  
    Hhx"47:  
    ; ------------- ;hb;%<xqT  
    diagram 4:                                  !输出图表4 _b8&$\>  
    Ji4xor  
    "TransverseProfiles" 5{nERKaPf  
    xR;>n[6  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) JDPn   
    EH{m~x[Ei  
    x: 0, 1.4 * r_co /um BSt^QH-'  
    "radialposition (µm)", @x j"6r]nc&  
    y: 0, 1.2 * I_max *cm^2 qv\n]M_&  
    "intensity (W/ cm&sup2;)", @y y#F`yXUj  
    y2: 0, 1.3 * N_Tm lz2B,#  
    frame 4/UY*Us&  
    hx UhKC:<%  
    hy Y,BzBUWK  
    }ie  O  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 ~D# -i >Z  
      yscale = 2, QOXG:?v\  
      color = gray, O@.C.5Ep  
      width = 3, ILi{5L  
      maxconnect = 1, )!SA]>-  
      "N_dop (right scale)" y4sKe:@2  
    |@'/F#T  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 oz3N 8^M  
      color = red, yOR]r+8  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 sa8JN.B  
      width = 3, $ 9bIUJ  
      "pump" "#zSk=52z  
    ToMvP B);  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 .*FBr7rE\  
      color = blue, |v,%!p s  
      maxconnect = 1, Ff6l"A5  
      width = 3, dy/\>hu  
      "signal" Fg` P@hC  
    f</'=k  
    F}9!k LR  
    ; ------------- }%e"A4v  
    diagram 5:                                  !输出图表5 a)L\+$@*  
    E"i<fr T  
    "TransitionCross-sections" HURr k~[  
    /QuuBtp  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) 9*fA:*T  
    _0HCtx ;  
    x: 1450, 2050 \Af25Mcf:  
    "wavelength(nm)", @x +yC]f b  
    y: 0, 0.6 e !V3/*F  
    "cross-sections(1e-24 m&sup2;)", @y vNdMPulr{  
    frame N RB>X  
    hx E2.@zY|:  
    hy GSlvT:k  
    dKk\"6 o  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 ~|y$^qy?U  
      color = red, )|52B;yZx  
      width = 3, &Bn> YFu  
      "absorption" .T!R&#]n  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 r.-U=ql  
      color = blue, :A2{  
      width = 3, Oe#*-  
      "emission" >.sdLA Si  
    Z]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