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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
    (* %j4AX  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, GUH-$rA  
    pumped at 790 nm. Across-relaxation process allows for efficient sngM4ikhs  
    population of theupper laser level. ]Te,m}E  
    *)            !(*  *)注释语句 PN"s ^]4  
    ]ML(=7z"  
    diagram shown: 1,2,3,4,5  !指定输出图表 IizPu4|  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 a\]g lw\;  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 >JUOS2  
    ; 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 +_"AF|  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 |9*8u>|RC  
    ; 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 aFf(m-  
    8Ts_;uId  
    include"Units.inc"         !读取“Units.inc”文件中内容 1Ax{Y#<  
    q7kE+z   
    include"Tm-silicate.inc"    !读取光谱数据 X1Vj"4'wT  
    p?idl`?^3  
    ; Basic fiberparameters:    !定义基本光纤参数 ra]lC7<H  
    L_f := 4 { fiberlength }      !光纤长度 79MF;>=tV  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 5N /NUs   
    r_co := 6 um { coreradius }                !纤芯半径 f:u3fL  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 |g1~-  
    2, R5mL$  
    ; Parameters of thechannels:                !定义光信道 1n-+IR"  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm H:5- S  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 Q xm:5P  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W ~M Mv+d88  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um a]4h5kJ';  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 <l!{j?Kx  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 0T7c=5z4W  
    "f N=Y$G  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm dK d"2+fH  
    w_s := 7 um                          !信号光的半径 {[:]}m(c  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 rZ:-%#Q4  
    loss_s := 0                            !信号光寄生损耗为0 %k =c9ll@:  
    , aJC7'(  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 {\p&?  
    sp8P[W1a  
    ; Function for defining themodel:   !定义模型函数,一定要有calc命令,否则函数只会被定义,但不会被执行 4Gor*{  
    calc :c}"a(|  
      begin O]VHX![Y$  
        global allow all;                   !声明全局变量 UB2Ft=  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 6z2WN|78  
        add_ring(r_co, N_Tm); <1eD*sC?g  
        def_ionsystem();              !光谱数据函数  P0<)E  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 5[0W+W  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 ./i5VBP5  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 }/J<#}t  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 =x3T+)qCNX  
        finish_fiber();                                   {'NXJ!I;t  
      end; \ IX|{]*D  
    ##5e:<c&[  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 _ZHDr[  
    show "Outputpowers:"                                   !输出字符串Output powers: c@|f'V4  
    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) &hu3A)%  
    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) <TEDqQ  
    L#MgoBXr  
    `b*x}HP$  
    ; ------------- w[]\%`69}Z  
    diagram 1:                   !输出图表1 ?%ei+  
    F~C7$  
    "Powers vs.Position"          !图表名称 ]6;G#  
    @d_9NOmNT  
    x: 0, L_f                      !命令x: 定义x坐标范围 <Gj]XAoe%  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 on.m '-s  
    y: 0, 15                      !命令y: 定义y坐标范围 lXip%6c7  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 O &}`R5Y;  
    frame          !frame改变坐标系的设置 }iRRf_   
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) =|V[^#V  
    hx             !平行于x方向网格 4vyJ<b  
    hy              !平行于y方向网格 xp%LXx j  
    iD) P6"  
    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 Cig! 3  
      color = red,  !图形颜色 6F; |x  
      width = 3,   !width线条宽度 f"Kl? IN8  
      "pump"       !相应的文本字符串标签 ZO& F15$P  
    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 q DPl( WXb  
      color = blue,     % |G"ZPO?  
      width = 3, pGP$2  
      "fw signal" e$N1m:1*  
    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 ,~>u<Wc!S  
      color = blue, ofuQ`g1hb  
      style = fdashed, }*,z~y}V#  
      width = 3, CO{AC~  
      "bw signal" +m4?a\U  
    no9=K4h`  
    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 \:>eZl?  
      yscale = 2,            !第二个y轴的缩放比例 q],/%W  
      color = magenta, 4 IXa[xAm  
      width = 3, <5npVm  
      style = fdashed, ZG)6{WS  
      "n2 (%, right scale)" LsaRw-4.c  
    vg\fBHzn  
    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 wj9 Hh  
      yscale = 2, Y*YV/E.  
      color = red, seA=7c5E  
      width = 3, :s#&nY  
      style = fdashed, %kL]-Z  
      "n3 (%, right scale)" w C-x'  
    *wV`7\@  
    %i@Jw  
    ; ------------- CM 8Ub%  
    diagram 2:                    !输出图表2 g&O!w!T  
    J" U!j  
    "Variation ofthe Pump Power" ^vc#)tm5p  
    J#Agk^Y 5  
    x: 0, 10 1VB{dgr  
    "pump inputpower (W)", @x \g:Bg%43h  
    y: 0, 10 &I?d(Z=:\  
    y2: 0, 100 %-3wR@  
    frame ;\gHFG}  
    hx bf$4Z: Y  
    hy zwdi$rM5  
    legpos 150, 150 qrY]tb^K  
    >?ckBU9  
    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 *+>QKR7  
      step = 5, "U iv[8B  
      color = blue, )}4xmf@g l  
      width = 3, AHdh]pfH  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 RyZy2^0<  
      finish set_P_in(pump, P_pump_in) P~u~`eH*  
    <amdPo+2D  
    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 6F08$,%Y  
      yscale = 2, j(];b+>  
      step = 5, _2nNCu (  
      color = magenta, ,B$m8wlI|  
      width = 3, h}f l:J1C  
      "population of level 2 (%, rightscale)", {{Z3M>Q  
      finish set_P_in(pump, P_pump_in) o;7_*=i  
    uDsof?z  
    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 dnstm@0k  
      yscale = 2, #~:@H&f790  
      step = 5, d/&~IR  
      color = red, ~"i4"Op&  
      width = 3, LV$`bZ  
      "population of level 3 (%, rightscale)", 46M?Gfd,X  
      finish set_P_in(pump, P_pump_in) P|kfPohI=  
    1bpjj'2%x  
    b%D}mxbS  
    ; ------------- l]KxUkA+  
    diagram 3:                         !输出图表3 Kf'oXCs  
    qo5WZ be  
    "Variation ofthe Fiber Length" \EOPlyf8x  
    jY ~7-  
    x: 0.1, 5 U8icP+Y  
    "fiber length(m)", @x @/0-`Y@?  
    y: 0, 10 o%$'-N  
    "opticalpowers (W)", @y K9+%rqC.|`  
    frame */E5<DO  
    hx I.RmBUq):s  
    hy R[_UbN 28  
    zd^QG  
    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 |)IS[:X  
      step = 20,             Hv.n O-c  
      color = blue, 3F|#nq  
      width = 3, z 2Rg`1B  
      "signal output" Y76UhtYH  
    Gtpl5gQH  
    ;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 .iXI oka  
       step = 20, color = red, width = 3,"residual pump" n*vzp?+Y  
    % C.I2J`_  
    ! set_L(L_f) {restore the original fiber length } 13KfI  
    y0f"UH/   
    D4e!A@LJ  
    ; ------------- 5 Yf T  
    diagram 4:                                  !输出图表4 A6# 5 z  
    ^ ;XJG9a0\  
    "TransverseProfiles" 7"0l>0 \  
    {e'V^l.v  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) lay)I11- >  
    N% W298  
    x: 0, 1.4 * r_co /um LIZsDTU  
    "radialposition (µm)", @x -"Hy%wE  
    y: 0, 1.2 * I_max *cm^2 0.}WZAYy~  
    "intensity (W/ cm&sup2;)", @y vRn"0Mzl8  
    y2: 0, 1.3 * N_Tm 2J5RZg9jL  
    frame `rLy7\@;  
    hx TaI72"8  
    hy @K:TGo,%I  
    WY 'QhieH  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 q"O4}4`  
      yscale = 2, u~y0H  
      color = gray, "fTW2D74  
      width = 3, /$NZj" #  
      maxconnect = 1, qe{:9  
      "N_dop (right scale)" ./# F,^F2  
    ,q|;`?R;  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 SZ'2/#R>  
      color = red, U 3UDA  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 xYUC|c1Q9  
      width = 3, OPtFz6   
      "pump" :G\X  
    ?\7$63gBH  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 $63_* 9  
      color = blue, ljw(cUM  
      maxconnect = 1, /+g9C(['  
      width = 3, H;.${u^lhd  
      "signal" Op2@En|d  
    #o/  
    Y"dUxv1Ap  
    ; ------------- )=]u]7p}  
    diagram 5:                                  !输出图表5 ;[,r./XmH  
    4[o/p8*/  
    "TransitionCross-sections" kl0|22"Gz  
    J+o6*t2|  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) _d`)N  
    []I _r=  
    x: 1450, 2050 QRL+-)DMc  
    "wavelength(nm)", @x X]T&kdQ6q  
    y: 0, 0.6 |h6u%t2AY  
    "cross-sections(1e-24 m&sup2;)", @y ]XS[\qo  
    frame )@,zG(t5;  
    hx L$ki>._i\  
    hy Q]7}" B&  
    z3mo2e  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 Ht_7:5v&   
      color = red, L7rH=gZ&!]  
      width = 3, 5%K(tRc|  
      "absorption" kx.8VUoM V  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 )ld`2) 4  
      color = blue, *MM8\p_PuT  
      width = 3, W#sCvI@   
      "emission" C=zc6C,  
    id:6O+\  
     
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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