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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
    (* fu]N""~  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, <kbyZXV@K  
    pumped at 790 nm. Across-relaxation process allows for efficient :E'P7A  
    population of theupper laser level. 3n48%5  
    *)            !(*  *)注释语句 ~xDw*AC-  
    |[1D$Qv  
    diagram shown: 1,2,3,4,5  !指定输出图表 5<+KR.W  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 /!T> b:0  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 O3qM1-k}S  
    ; 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 4l @)K9F  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 LchnBtjn  
    ; 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 B42sb_  
    LM"y\q ]  
    include"Units.inc"         !读取“Units.inc”文件中内容 $$1qF"GF  
    #/ "+  
    include"Tm-silicate.inc"    !读取光谱数据 q SD9Pue  
    79BaDB`{a  
    ; Basic fiberparameters:    !定义基本光纤参数 BX< dSK  
    L_f := 4 { fiberlength }      !光纤长度 o#D.9K(  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 yPgmg@G@/  
    r_co := 6 um { coreradius }                !纤芯半径 XG 0v  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 T ):SGW  
    `ifiL   
    ; Parameters of thechannels:                !定义光信道 y%cO#P@  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm x0Z5zV9  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦  }roG(  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W e@n!x}t8  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um %*W<vu>H  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 <Q5Le dN  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 J4aB Pq`  
    gEJi[E@  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm @i%YNI5*  
    w_s := 7 um                          !信号光的半径 M+xdHBg  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 ;3m!:l  
    loss_s := 0                            !信号光寄生损耗为0 thW<   
    ;[$n=VX`  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 m,_d^  
    t"AzI8O  
    ; Function for defining themodel:   !定义模型函数,一定要有calc命令,否则函数只会被定义,但不会被执行 ga0'zo9K  
    calc I021p5h|  
      begin Q-eCHr)  
        global allow all;                   !声明全局变量 !; v~^#M]~  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 c&'JmKV>&  
        add_ring(r_co, N_Tm); <J{'o`{  
        def_ionsystem();              !光谱数据函数 (@sp/:`6  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 5VE2@Fn}  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 aT!;{+  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 6Bt=^~d  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 |$+5@+Zz  
        finish_fiber();                                   yR71%]*.  
      end; |m G7XL,  
    P0GeZ02]  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 vO@s$qi  
    show "Outputpowers:"                                   !输出字符串Output powers: Q^_/By@  
    show"pump:     ", P_out(pump):d3:"W"  !输出字符串pump:和计算值(格式为3个有效数字,单位W) KL?)akk  
    show"signal:   ",P_out(signal_fw):d3:"W" !输出字符串signal:和计算值(格式为3个有效数字,单位W) {}Ejt:rKN  
    U 4,2br>  
    olYsT**'  
    ; ------------- d"Q |I  
    diagram 1:                   !输出图表1 Bl;KOR  
    z2yJ#  
    "Powers vs.Position"          !图表名称 /Cr/RG:OX  
    s8gU7pT49  
    x: 0, L_f                      !命令x: 定义x坐标范围 'mMjjG9  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 "ZMkL)'7-  
    y: 0, 15                      !命令y: 定义y坐标范围 s(2GFc  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 5g ;ac~g  
    frame          !frame改变坐标系的设置 (lH,JX`$a  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) %$ceJ`%1e  
    hx             !平行于x方向网格 8cWZ"v  
    hy              !平行于y方向网格 UlovXb  
    !?FK We  
    f: P(pump, x),    !命令f: 定义函数图;P(pump, x)函数是计算x位置处的泵浦光功率 7C,T&g 1:  
      color = red,  !图形颜色 v."Dnl  
      width = 3,   !width线条宽度 >'=MH2;  
      "pump"       !相应的文本字符串标签 9w4sSj`  
    f: P(signal_fw, x),  !P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 -_^c6!i  
      color = blue,     ;</Lf=+Vm  
      width = 3, XhW %,/<  
      "fw signal" )j&"%[2F  
    f: P(signal_bw, x),   !P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 RDQ^dui  
      color = blue, 3Rv7Qx  
      style = fdashed, lE#m]D  
      width = 3, #`SD$;  
      "bw signal" mDMt5(.   
    j|(Z#3J  
    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 w YNloU  
      yscale = 2,            !第二个y轴的缩放比例 'c`jyn  
      color = magenta, (Xx n\*S  
      width = 3, 1yqoA *  
      style = fdashed, L/r@ S'  
      "n2 (%, right scale)" }At{'8*n  
    +|RB0}hFS-  
    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 {I1~-8  
      yscale = 2, .0y%5wz8j  
      color = red, 3sm M,fi  
      width = 3, t}p@:'  
      style = fdashed, +C{p%`<  
      "n3 (%, right scale)" 6LUC!Sh  
    `sHuM*  
    I4_d[O9  
    ; ------------- LLAa1Wq  
    diagram 2:                    !输出图表2 -pb&-@Hul  
    }ZOFYu0f  
    "Variation ofthe Pump Power" ^CT&0  
    _7)F ?  
    x: 0, 10 i8pU|VpA  
    "pump inputpower (W)", @x '3(l-nPiG^  
    y: 0, 10 ) M<vAUF  
    y2: 0, 100 U]4pA#*{|  
    frame rP=sG;d  
    hx JiS5um=(.  
    hy \}]iS C.2  
    legpos 150, 150 j . A6S`  
    |$lwkC)O  
    f: (set_P_in(pump, x);P_out(signal_fw)), !set_P_in(pump,x)改变泵浦信道功率;P_out(signal_fw)输出前向信号光 yubSj*  
      step = 5, dj9 ?t  
      color = blue, t!;/Z6\Pb  
      width = 3, Yxd X#3  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 f|7u_f  
      finish set_P_in(pump, P_pump_in) }-<zWI {p  
    IO$z%r7  
    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 # '|'r+  
      yscale = 2, hsLzj\)6  
      step = 5, !b|'Vp^U  
      color = magenta, QDmYSY$  
      width = 3, T3&`<%,f  
      "population of level 2 (%, rightscale)", _!V%fw  
      finish set_P_in(pump, P_pump_in) f^Bc  
    E_ucab-Fi  
    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 R!x: C!{  
      yscale = 2, q 2? X"!  
      step = 5, t2{~bzq1X  
      color = red, ~[PKcEX  
      width = 3, T6 #"8qz<  
      "population of level 3 (%, rightscale)", )hKS0`$|  
      finish set_P_in(pump, P_pump_in) |BU+:+  
    k)(Biz398E  
    2s ,8R  
    ; ------------- uZ6d35MJ  
    diagram 3:                         !输出图表3 :Og:v#r8=  
    *<V^2z$y_  
    "Variation ofthe Fiber Length" e&I t  
    kUHE\L.Y]  
    x: 0.1, 5 ``Q 2P%  
    "fiber length(m)", @x ,5k-.Md>2*  
    y: 0, 10 M~T.n)x2  
    "opticalpowers (W)", @y cd@.zg'sYn  
    frame q`|CrOzO  
    hx P1zK2sL_  
    hy 8Z#j7)G  
    vxlOh.a|/L  
    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 ;."<m   
      step = 20,             wOgE|n  
      color = blue, %kI} [6J_  
      width = 3, oUDVy_k  
      "signal output" @)YY\l#  
    ^+70<#Xc  
    ;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 (il0M=M  
       step = 20, color = red, width = 3,"residual pump" qztV,R T  
    y7u^zH6wj  
    ! set_L(L_f) {restore the original fiber length } ENh8kD l5  
    Eh8Pwt7C@  
    ,8Iv9M}2  
    ; ------------- 5CYo7mJ6+  
    diagram 4:                                  !输出图表4 N"5fmY<  
    / l>.mK()  
    "TransverseProfiles" j} HFs0<L  
    8pZ< 9t'  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) Y0uvT7+[hi  
    d 4{FDqto  
    x: 0, 1.4 * r_co /um eBW=^B"y+  
    "radialposition (µm)", @x m$Y :0_^-  
    y: 0, 1.2 * I_max *cm^2 yOXO)u1n  
    "intensity (W/ cm&sup2;)", @y aC=['a>)  
    y2: 0, 1.3 * N_Tm FY0%XW  
    frame Q%ad q-B  
    hx Xh3;   
    hy !F4;_A`X  
    |cbd6e{!  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 oh8L`=>&a  
      yscale = 2, O mMX$YID  
      color = gray, {5Lj8 N5  
      width = 3, gvavs+H%  
      maxconnect = 1, E$\~lcq  
      "N_dop (right scale)" $< %B#axL  
    EYzg%\HH  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 :> -1'HC  
      color = red, Ggm` ~fS  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 >wON\N0V_  
      width = 3, |w&~g9   
      "pump" xh9qg0d  
    fZryG  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 3!9 Z=- tD  
      color = blue, %HuyK  
      maxconnect = 1, |^n3{m  
      width = 3, j+ ::y) $  
      "signal" pK_?}~  
    _2Py\+$  
    d.F)9h]XHO  
    ; ------------- 'Z!G a.I  
    diagram 5:                                  !输出图表5 7qIB7_K5  
     $g8}^1  
    "TransitionCross-sections" m\0cE1fir  
    H'g?llh1J  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) >9K//co"of  
    S'i;xL>  
    x: 1450, 2050 4*H"Z(HP  
    "wavelength(nm)", @x rzLd"`  
    y: 0, 0.6 zQ)+/e(8  
    "cross-sections(1e-24 m&sup2;)", @y I}0_nge  
    frame i?}>.$j  
    hx Iin#Wd-/  
    hy ur%$aX)  
    [Eq<":)  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 QJ X/7RA  
      color = red, p]|LV)R n  
      width = 3, {[OwMk  
      "absorption" ? Nj)6_&  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 #gZ|T M/h  
      color = blue, M@7Xp)S"  
      width = 3, pA4 ,@O  
      "emission" &w\ I<J`T  
     -;c  
     
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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