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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
    (* '^F|k`$r  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, q:- ]d0B+  
    pumped at 790 nm. Across-relaxation process allows for efficient %is,t<G  
    population of theupper laser level. yS uLt@X  
    *)            !(*  *)注释语句 fs3 -rXoB  
    cdJ`Gk  
    diagram shown: 1,2,3,4,5  !指定输出图表 -M1~iOb  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 nT@6g|!  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 6h:?u4  
    ; 3:"Variation of the Fiber Length"!信号输出功率vs 光纤长度的变化,仿真最佳光纤长度 N+C)/EN$  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 wKi}@|0[@  
    ; 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 {glqWFT  
    LG Y!j_bD  
    include"Units.inc"         !读取“Units.inc”文件中内容 Pi"~/MGP$  
    T[4[/n> i  
    include"Tm-silicate.inc"    !读取光谱数据 1O]5/Eu  
    fNAo$O4cm  
    ; Basic fiberparameters:    !定义基本光纤参数 "BLv4s|y7L  
    L_f := 4 { fiberlength }      !光纤长度 RI5g+Du?  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 (N*<\6kr  
    r_co := 6 um { coreradius }                !纤芯半径 XAQ\OX#  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 X@ bn??  
    _d\u!giy  
    ; Parameters of thechannels:                !定义光信道 43{_Y]  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm 4Wi8 $  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 `bZ2x@  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W kyRh k\X  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um 5D]30  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布  d-ag  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 C>Omng1>^  
    g:uvoMUD  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm *w'q  
    w_s := 7 um                          !信号光的半径 )p/=u@8_f  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 {8!ZKlB  
    loss_s := 0                            !信号光寄生损耗为0 f!M[awj%  
    pBg|n=^  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 WA]%,6  
    xfV,==uF  
    ; 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 08Pt(kzNA  
    calc e(OwS?K  
      begin 7d|*postv  
        global allow all;                   !声明全局变量 ,>bGbx  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 YM #  
        add_ring(r_co, N_Tm); .0nn0)"  
        def_ionsystem();              !光谱数据函数 ;NiArcAS!  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 3~[`[4n^  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 h*;g0QBkl  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 lgkl? 0!  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 H4PbO/{xO  
        finish_fiber();                                   ] ?DDCew  
      end; H Z;ZjC*  
    4 [R8(U[g  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 F\-B3i%0  
    show "Outputpowers:"                                   !输出字符串Output powers: 5u2{n rc  
    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) Vl5SL{+D  
    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) |eH wp  
    ]dPVtk  
    &\;<t, 3A~  
    ; ------------- ?1GY%-  
    diagram 1:                   !输出图表1 '}U_D:o.b  
    Q!4i_)rM  
    "Powers vs.Position"          !图表名称 wF|0n t  
    ioB|*D<U2  
    x: 0, L_f                      !命令x: 定义x坐标范围 T"L0Iy!k;  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 !cq=)xR  
    y: 0, 15                      !命令y: 定义y坐标范围 vKcl6bVT  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 .ocx(_3G  
    frame          !frame改变坐标系的设置 t$U3|r  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) ;]2 x  
    hx             !平行于x方向网格 vOos*&  
    hy              !平行于y方向网格 ,sO:$  
    Yw6DJY  
    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 AuoxZ?V  
      color = red,  !图形颜色 5h_<R!jA  
      width = 3,   !width线条宽度 <lC]>L  
      "pump"       !相应的文本字符串标签 "KMLk  
    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 6eOrs-ty  
      color = blue,     IZv~[vi_  
      width = 3, ^y:FjQC:  
      "fw signal" 7cIC&(h5  
    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 El~-M`Gf  
      color = blue, :z B}z^8-  
      style = fdashed, p]wP36<S!  
      width = 3, @bY('gC,  
      "bw signal" VLf g[*k  
    uWUR3n  
    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 J__;.rnk  
      yscale = 2,            !第二个y轴的缩放比例 }X=87ud  
      color = magenta, HH"$#T^-  
      width = 3, 'I&|1I^  
      style = fdashed, _Ny8j~  
      "n2 (%, right scale)" ;(K  
    1s Br.+p  
    f: 100 * n(x, 3),          !n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比 Hl4\M]]/&  
      yscale = 2, 7N>oY$&)  
      color = red, vT?Q^PTO  
      width = 3, CXTt(-FT  
      style = fdashed, *i`v~ >  
      "n3 (%, right scale)" ]\OWZ{T'j  
    !tI=`Ml[  
    :bwM]k*$  
    ; ------------- ?$3r5sx  
    diagram 2:                    !输出图表2 6^Ph '  
     VJ3hC[  
    "Variation ofthe Pump Power" +W6Hva.  
    ;P3>>DZ  
    x: 0, 10 #e*X0;m  
    "pump inputpower (W)", @x SC'BmR"ox  
    y: 0, 10 "ml?7Xl,n  
    y2: 0, 100  2A*/C7  
    frame .AXdo'&2i  
    hx ,E&Bn8L~O  
    hy NUMi])HkN  
    legpos 150, 150 ]pWP?Ws  
    Xt ft*Z  
    f: (set_P_in(pump, x);P_out(signal_fw)), !set_P_in(pump,x)改变泵浦信道功率;P_out(signal_fw)输出前向信号光 {1~9vHAZ  
      step = 5, rnu e(t  
      color = blue, ; yyO0Ha  
      width = 3, Tj`yJ!0  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 Y&s2C%jT  
      finish set_P_in(pump, P_pump_in) 6)ycmu;!$  
    Uh.Sc:trA  
    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 ;+ G9-  
      yscale = 2, s;J\Kc?"|  
      step = 5, va5FxF*%  
      color = magenta, 4b4QbJ$  
      width = 3, CN/IH   
      "population of level 2 (%, rightscale)", ;W0]66&  
      finish set_P_in(pump, P_pump_in)  Vu [:A  
    84'?u m  
    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 Y;,Hzmbs6w  
      yscale = 2, ~Eq\DK  
      step = 5, ('t kZt%8  
      color = red, "x&3Z@q7  
      width = 3, JvkL37^ n:  
      "population of level 3 (%, rightscale)", O6iCZ  
      finish set_P_in(pump, P_pump_in) Noh?^@T`Ov  
    $M':&i5`,  
    RlsVC_H\  
    ; ------------- Tr&E4e  
    diagram 3:                         !输出图表3 L,~MicgV  
    y? "@v.  
    "Variation ofthe Fiber Length" [Uli>/%JB  
    H?uukmZl  
    x: 0.1, 5 h>wcT VF  
    "fiber length(m)", @x <*u C  
    y: 0, 10 hmZvIy(  
    "opticalpowers (W)", @y 4<.O+hS  
    frame cx^{/U?9}  
    hx YsP/p-  
    hy B!bsTvX  
    )47MFNr~>  
    f: (set_L(x);P_out(signal_fw)),     !改变光纤长度对信号光输出功率的影响 ?+r!z  
      step = 20,             qX$u4I!,  
      color = blue, LmQ/#Gx  
      width = 3, m=TJDr-  
      "signal output" TY.FpW  
    0Q~@F3N-\>  
    ;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 .0|=[|  
       step = 20, color = red, width = 3,"residual pump" %M&3VQ9w  
    SMoz:J*Q(  
    ! set_L(L_f) {restore the original fiber length } D|_V<'  
    NP/>H9Q2%  
    %6ub3PLw8  
    ; ------------- gLQ #4H  
    diagram 4:                                  !输出图表4 3]U]?h  
    +y&d;0!  
    "TransverseProfiles" 8~ #M{}  
    @(:v_l  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) )ofm_R'q*  
    ? _ <[T  
    x: 0, 1.4 * r_co /um }q!_!q,@  
    "radialposition (µm)", @x 0xpx(T[  
    y: 0, 1.2 * I_max *cm^2 ip``v0Nf  
    "intensity (W/ cm&sup2;)", @y ^bUxLa[.  
    y2: 0, 1.3 * N_Tm '{ f=hE_/  
    frame Y ?'tUV  
    hx PuXUuJx(  
    hy b2 kWjg.4  
    1f4 bt6[  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 dqe7sZl!  
      yscale = 2, ?znSx}t  
      color = gray, GBP-V66  
      width = 3, =Q(vni83<  
      maxconnect = 1, KJh,,xI>by  
      "N_dop (right scale)" XM~~y~j  
    &uM^0eM  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 t`|,6qEG  
      color = red, I,O#X)O|i  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 Cca0](R*&  
      width = 3, !gP0ndRJ=  
      "pump" O~@fXMthh  
    z`$J_CjY  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 K:5eek  
      color = blue, 'C?NJ~MN  
      maxconnect = 1, XU-m"_t  
      width = 3, ml u 3K  
      "signal" N.j "S'(i  
    bAF )Bli  
    .px:e)iW  
    ; ------------- ~]uZy=P? 5  
    diagram 5:                                  !输出图表5 x5Zrz<Y$w  
    ^_>!B)  
    "TransitionCross-sections" 0ys~2Y!eH  
    nr\q7  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) +F@_Es<6  
    w'ybbv{c  
    x: 1450, 2050 UUtbD&\  
    "wavelength(nm)", @x G&9#*<F$c  
    y: 0, 0.6 \ijMw  
    "cross-sections(1e-24 m&sup2;)", @y c3xl9S,5  
    frame Hs0pW5oZ  
    hx E9 Y\X  
    hy UAYd?r  
    c-CYdi@  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 ;D2E_!N dt  
      color = red, WDx Mo`zT  
      width = 3, '2^ Yw  
      "absorption" F u _@!K  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 smU4jh9S  
      color = blue, 'Ud| Ex@A9  
      width = 3, ..KwTf  
      "emission" F^kwdS  
    svhrf;3:  
     
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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