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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
    (* Wb$bCR#?<  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, }R(_^@ ]  
    pumped at 790 nm. Across-relaxation process allows for efficient 4,8 =[  
    population of theupper laser level. "[ ,XS`  
    *)            !(*  *)注释语句 ~d]7 Cl  
    *?\Nioii  
    diagram shown: 1,2,3,4,5  !指定输出图表 s4*,ocyBP  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 =0|evC  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 l1-FL-1  
    ; 3:"Variation of the Fiber Length"!信号输出功率vs 光纤长度的变化,仿真最佳光纤长度 "Y6mM_flq  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 r 6<}S(  
    ; 5:"Transition Cross-sections"    !不同波长的跃迁横截面,横坐标波长,纵坐标为横截面 6=D;K.!  
    ?U[AE -*  
    include"Units.inc"         !读取“Units.inc”文件中内容 Fh;(1X75I  
    irS62Xe  
    include"Tm-silicate.inc"    !读取光谱数据 N\$6R-L  
    R8)"M(u=l  
    ; Basic fiberparameters:    !定义基本光纤参数 ^~$ o-IX  
    L_f := 4 { fiberlength }      !光纤长度 ce\-oT  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 #(G&%I A|;  
    r_co := 6 um { coreradius }                !纤芯半径 vhW '2<(  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 1-fz564  
    TUt)]"h<  
    ; Parameters of thechannels:                !定义光信道 =T`-h"E~@  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm dE~ns ,+  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 u""= 9>0  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W =r2d{  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um WF7RMQ51j  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 Z^ 3Risi  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 .nN7*))Fj  
    #</yX5!V  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm  '}=M~  
    w_s := 7 um                          !信号光的半径 IYFA>*Es  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布  AHb   
    loss_s := 0                            !信号光寄生损耗为0 ~Q0}>m,S  
    [ 0Sd +{Q  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 Fu$otMw%l  
    Gu pKM%kM  
    ; 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 |qD<h  
    calc "Q( 8FF  
      begin P'+*d#*S  
        global allow all;                   !声明全局变量 *SZ<ori  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 0NGokaD)H  
        add_ring(r_co, N_Tm); N Jf''e3  
        def_ionsystem();              !光谱数据函数 FpEdwzBb<  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 7gkHKdJoMA  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 -Y6JU  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 iDA`pemmi&  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 jB;+tDC!Co  
        finish_fiber();                                   B.o&%5dG  
      end; f]EHDcC3X  
    `^/Q"zH  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 B4?P"|  
    show "Outputpowers:"                                   !输出字符串Output powers: S/4k fsN  
    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) l6~eb=u;9g  
    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) qr*/}F6  
    Wd7*sa3T  
    Z-:`{dns/  
    ; ------------- ?s//a_nL*  
    diagram 1:                   !输出图表1 "](~VF[J8  
    AQ&;y&+QR  
    "Powers vs.Position"          !图表名称 t9kgACo/M  
    `fH6E8N  
    x: 0, L_f                      !命令x: 定义x坐标范围 B?]^}r  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 t?s1@}G^  
    y: 0, 15                      !命令y: 定义y坐标范围 ^%nAx| 4xQ  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 `c icjA@~  
    frame          !frame改变坐标系的设置 q&vr;f B2  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) CAXU #  
    hx             !平行于x方向网格 o{qbbJBC  
    hy              !平行于y方向网格 5o,82 Kti  
    @!S5FOXipZ  
    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 6l4l74  
      color = red,  !图形颜色 $I.'7 &h;  
      width = 3,   !width线条宽度 qnOAIP:0  
      "pump"       !相应的文本字符串标签 cj[y]2{1h  
    f: P(signal_fw, x),  !P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 >7n(* M  
      color = blue,     uwbj`lpf  
      width = 3, ` p)#!  
      "fw signal" _jtBU  
    f: P(signal_bw, x),   !P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 9]Y@eRI<  
      color = blue, lHx$F ?  
      style = fdashed, Nz m 7E]  
      width = 3, az w8BK  
      "bw signal" A >e%rx  
    ]8RcZn  
    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 ?vXy7y&4  
      yscale = 2,            !第二个y轴的缩放比例 %l>^q`p  
      color = magenta, qwN-VCj  
      width = 3, xHf l>C'  
      style = fdashed, 'p<(6*,"  
      "n2 (%, right scale)" z2r{AQ.&  
    LB>!%Vx  
    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 ? xy~N?N  
      yscale = 2, :wIbKs.r  
      color = red, |[*b[O 1W  
      width = 3, n04Zji(F@  
      style = fdashed, /vBpRm  
      "n3 (%, right scale)" RJ0w3T]7  
    @6\8&(|  
    c(o8uWn  
    ; ------------- C\1Dy5  
    diagram 2:                    !输出图表2 .uhP (  
    Mq$e5&/  
    "Variation ofthe Pump Power" xC|7"N^/  
    <h(tW  
    x: 0, 10 d8av`m  
    "pump inputpower (W)", @x v,kedKcxv'  
    y: 0, 10 5{{u #W%=  
    y2: 0, 100 [~x Q l  
    frame n]|[|Rf1  
    hx 4-s Uy  
    hy @@+\  
    legpos 150, 150 cd\0  
    g,\<fY+ 4  
    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 ~/QzL.S;p  
      step = 5, =*}|y;I  
      color = blue, 8USF;k  
      width = 3, OD{Rh(Id  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 u"nyx0<  
      finish set_P_in(pump, P_pump_in) >*EcX3  
    z[l17+v  
    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 o[_ {\  
      yscale = 2, 8hdd1lVKO8  
      step = 5, w_6h $"^x  
      color = magenta,  dY|(  
      width = 3, jytfGE:  
      "population of level 2 (%, rightscale)", ^ *RmT  
      finish set_P_in(pump, P_pump_in) ,myl9s  
    uS3J^=>@(a  
    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!}BmRLh2  
      yscale = 2, $kg!XT{ V  
      step = 5, Jgb{Tl:r  
      color = red, {l! [{  
      width = 3, Sa6}xe."M,  
      "population of level 3 (%, rightscale)", .Q4EmpByCg  
      finish set_P_in(pump, P_pump_in) >{V]q*[/;Q  
    n hS=t8H  
    VcA87*pel  
    ; ------------- ]QRhTz  
    diagram 3:                         !输出图表3 6*Rz}RQ  
    os"o0?  
    "Variation ofthe Fiber Length" o^biO!4,  
    y1B3F5  
    x: 0.1, 5 t\S}eoc  
    "fiber length(m)", @x M{1't  
    y: 0, 10 "2$C_aE  
    "opticalpowers (W)", @y ?=-18@:.ss  
    frame u+kXJ  
    hx !'[f!vsyM{  
    hy ?FxxH*>"  
    BNnGtVAbZ  
    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 $s5LzJn  
      step = 20,             YOy/'Le^:  
      color = blue, skf7Si0z  
      width = 3, 7jvf:#\LtL  
      "signal output" >XM-xK-=  
    5F18/:\n  
    ;f: (set_L(x);P_out(pump)),                     !改变光纤长度对泵浦信号输出功率的影响 k& 2U&  
       step = 20, color = red, width = 3,"residual pump" ^g"G1,[%w  
    4,`Yx s)%  
    ! set_L(L_f) {restore the original fiber length } ?v \A&d  
    S)T~vK(n  
    lo5,E(7~h  
    ; ------------- q{nNWvL  
    diagram 4:                                  !输出图表4 C5c@@ch :  
    sFsp`kf  
    "TransverseProfiles" \GO^2&g(  
    VE`5bD+%e  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) An{`'U(l  
    OTY9Q  
    x: 0, 1.4 * r_co /um T8bk\\Od  
    "radialposition (µm)", @x 7jQOwzj  
    y: 0, 1.2 * I_max *cm^2 n<+g{QHi  
    "intensity (W/ cm&sup2;)", @y s3Pr$h  
    y2: 0, 1.3 * N_Tm T@ (MSgp9  
    frame KmG*`Es  
    hx SxI='z_S.f  
    hy n6Je5fE  
    `q@5d&d`j  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 {N42z0c  
      yscale = 2, W2?6f:  
      color = gray, D2z" Z@  
      width = 3, gdPv,p19L  
      maxconnect = 1, O~?H\2S  
      "N_dop (right scale)" ?Z 9C}t]  
    [H<![Z1*r  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 >slD.rb]  
      color = red, P MV;A{T  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 SVB> 1s9F  
      width = 3, Ta8;   
      "pump" @-qS[bV  
    6O"?wN%$  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 va 7I_J   
      color = blue, +GqK$B(x7  
      maxconnect = 1, :Aj8u\3!@  
      width = 3,  `S$zwot  
      "signal" \]uD"Jqv#  
    o b;]  
    .$&mWytw=  
    ; ------------- zW.I7Z0^  
    diagram 5:                                  !输出图表5 Mm7;'Zbg  
    :59fb"^$  
    "TransitionCross-sections" je LRS8];  
    &\6Buw_  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) }x!=F<Q!r  
    J< Ljg<t+  
    x: 1450, 2050 !8YZ;l  
    "wavelength(nm)", @x qw?#~"Ca.  
    y: 0, 0.6 $ 1lI6 = ,  
    "cross-sections(1e-24 m&sup2;)", @y M~/7thP{  
    frame 1 1Sflj  
    hx >1uo5,wrF  
    hy R. :~e  
    NN> E1d=  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 q9+`pj  
      color = red, u*}[fQ`aF  
      width = 3, )bqSM&SO  
      "absorption" ^i+ d3  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 'C[{cr.`  
      color = blue, (dvsGYT|.  
      width = 3, :DWvH,{+&  
      "emission" ,jH<i.2R  
    nUb0R~wr$G  
     
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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