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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
    (* JGSeu =)  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, O{&5/xBA  
    pumped at 790 nm. Across-relaxation process allows for efficient m:/@DZ  
    population of theupper laser level. X#5dd.RR  
    *)            !(*  *)注释语句 #O^H? 3Q3  
    A,MRK#1u  
    diagram shown: 1,2,3,4,5  !指定输出图表 ;=hl!CB  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 8nQlmWpJ  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 Gp$[u4-6M6  
    ; 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 7'j?GzaQ+  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 KU3lAjzN  
    ; 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 ]1%H.pF  
    0F`@/C1y55  
    include"Units.inc"         !读取“Units.inc”文件中内容 p{!aRB%  
    u~Q0V J~  
    include"Tm-silicate.inc"    !读取光谱数据 KwWqsuju  
    G-Z_pGer^  
    ; Basic fiberparameters:    !定义基本光纤参数 %B3E9<9>U  
    L_f := 4 { fiberlength }      !光纤长度 X.,SXNS+B  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 b.h~QyI/W  
    r_co := 6 um { coreradius }                !纤芯半径 wlC_rRj~  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 aCX](sN  
    X6!u(plVQ  
    ; Parameters of thechannels:                !定义光信道 M\,0<{  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm y .S0^  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 1]fqt[*)  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W x+nrdW+  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um Hy|$7]1  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 J^pL_  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 c>!>D7:7  
    =bZ>>-<  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm Mmbb}(<  
    w_s := 7 um                          !信号光的半径 Ws4aCH1  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 jr*A1y*  
    loss_s := 0                            !信号光寄生损耗为0 sBu=@8R]y  
    :r:5a(sq  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 C $aiOK-]+  
    m=PSC Ib  
    ; 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 <'-}6f3  
    calc U[c,cdA  
      begin 9HRYk13ae  
        global allow all;                   !声明全局变量 @;fdf3ian  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 7w|W\J^7r  
        add_ring(r_co, N_Tm); jbn{5af  
        def_ionsystem();              !光谱数据函数 P00d#6hPJ  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 pJVzT,poh  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 EHcqj;@m  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 p<`q^D  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 4kT|/ bp  
        finish_fiber();                                   j?+FS`a!  
      end; _z)G!_7.>\  
    '-4);:(^  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 t\CVL?e`  
    show "Outputpowers:"                                   !输出字符串Output powers: my[)/'  
    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) $9+}$lpPd  
    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) 6t *pV [  
    /o.wCy,J<  
    `;*Wt9  
    ; ------------- 8K]fw{-$L  
    diagram 1:                   !输出图表1 IpoZ6DB$  
    D+LeZBJ  
    "Powers vs.Position"          !图表名称 (pH13qU5  
    MQD UJ^I$  
    x: 0, L_f                      !命令x: 定义x坐标范围 `U#*O+S-^  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 K:V_,[gO  
    y: 0, 15                      !命令y: 定义y坐标范围 Zu_m$Mx  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 3:Y ZC9  
    frame          !frame改变坐标系的设置 -G(z!ed  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) +AtZltM i  
    hx             !平行于x方向网格 s IY`H^  
    hy              !平行于y方向网格 y!1%Kqx1,n  
    9|D!&=8   
    f: P(pump, x),    !命令f: 定义函数图;P(pump, x)函数是计算x位置处的泵浦光功率 p;"pTGoW i  
      color = red,  !图形颜色 Ii,e=RG>  
      width = 3,   !width线条宽度 H"WkyvqXb  
      "pump"       !相应的文本字符串标签 iPa!pg4m  
    f: P(signal_fw, x),  !P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 Z$k4T$,[-  
      color = blue,     gJ+MoAM"  
      width = 3, \Bw9%P~ G  
      "fw signal" 245(ajxHC  
    f: P(signal_bw, x),   !P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 ,`^B!U3m   
      color = blue, Qa5<go{  
      style = fdashed, eq<xO28z  
      width = 3, }C}~)qaZv+  
      "bw signal" z/.x*A=  
    ;jfjRcU  
    f: 100 * n(x, 2),    !n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 ^a[7qX_B  
      yscale = 2,            !第二个y轴的缩放比例 [j?n}D@L  
      color = magenta, b~Y$!fc  
      width = 3, 1wW8D>f]K  
      style = fdashed, I+!w9o2nZ  
      "n2 (%, right scale)" oR[,?qu@f  
    .YYiUA-i9n  
    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 =xSFKu*  
      yscale = 2, k*J}/HO  
      color = red, 5H6m{ng  
      width = 3, gLsl/G  
      style = fdashed, N~;=*)_VH  
      "n3 (%, right scale)" [`Ol&R4k  
    ZC_b`q<  
    =V5<>5"M?  
    ; ------------- I')URk[  
    diagram 2:                    !输出图表2 _;O$o t\5  
    \wCj$- ;Jt  
    "Variation ofthe Pump Power" z[M LMf[c  
    K,&)\r kzD  
    x: 0, 10 9jDV]!N4  
    "pump inputpower (W)", @x -n?|,cO  
    y: 0, 10 `4'v)!?  
    y2: 0, 100 ^' lx5+-  
    frame :2^%^3+V  
    hx ~= lm91W  
    hy RgHPYf{  
    legpos 150, 150 |qH-^b.F  
    0vbn!<:  
    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 y"#o9"&>&  
      step = 5, lE78 Yl]  
      color = blue, }y(1mzb  
      width = 3, )-xx$0mL-  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 }N]|zCEj  
      finish set_P_in(pump, P_pump_in) Lco JltY{5  
    V k5}d[[l  
    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 $iUK, ?  
      yscale = 2, !>TVDN>  
      step = 5, Dkay k  
      color = magenta, w,SOvbAxX2  
      width = 3, q{ItTvL  
      "population of level 2 (%, rightscale)", a9j f7r1  
      finish set_P_in(pump, P_pump_in) E y1mlW  
    M/x49qO#  
    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 a}|B[b  
      yscale = 2, SQDllG84E  
      step = 5, Jt\?,~,  
      color = red, Z*tB=  
      width = 3, 1.+0=M[h  
      "population of level 3 (%, rightscale)", s$4!?b$tw  
      finish set_P_in(pump, P_pump_in) ry\Nm[SQ  
    N\ChA]Ck  
    jAB~XaT,  
    ; ------------- 12U1DEd>-  
    diagram 3:                         !输出图表3 =Bcwd7+  
    #f0J.)M  
    "Variation ofthe Fiber Length" tV%:sk^d  
    >'iXwe-  
    x: 0.1, 5 y2;uG2IS_g  
    "fiber length(m)", @x Qh<_/X?  
    y: 0, 10 LX[<Wh_X(  
    "opticalpowers (W)", @y %JeT,{  
    frame V|e9G,z~A  
    hx : KhAf2A  
    hy X,y0 J  
    hm*1w6 =  
    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*VRxQ,h6+  
      step = 20,             m^Qc9s#D  
      color = blue, N_(qMW  
      width = 3, Q'/v-bd?o  
      "signal output" ShbW[*5  
    C ?JcCD2  
    ;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 R".~{6  
       step = 20, color = red, width = 3,"residual pump" = &jLwy  
    3qwi)nm  
    ! set_L(L_f) {restore the original fiber length } 7TD%vhbiwi  
    Y> ElE-  
    [vh&o-6  
    ; ------------- _; /onM   
    diagram 4:                                  !输出图表4 bHZXMUewC  
    O W`yv  
    "TransverseProfiles" *WdnP.'Y  
    {_T?0L  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) )F*;7]f  
    d+[GMIxg  
    x: 0, 1.4 * r_co /um `d]D=DtH  
    "radialposition (µm)", @x ^h #0e:7<  
    y: 0, 1.2 * I_max *cm^2 z/Z 0cM#  
    "intensity (W/ cm&sup2;)", @y CzDJbvv ]  
    y2: 0, 1.3 * N_Tm {ZQ|Ydpk  
    frame xc{$=>'G  
    hx )RV.N}NU  
    hy :Rl*64}  
    Af y\:&j  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 ;U$Fz~rJ  
      yscale = 2, 3"afrA  
      color = gray, U0>Uqk",  
      width = 3, Ot,eAiaX  
      maxconnect = 1, sg0HYb%_E  
      "N_dop (right scale)" (#,0\ea{x  
    6WUP#c@{  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 ${fJ]  
      color = red, |hGi8  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 #$k6OlK-r"  
      width = 3, Z ,4G'[d  
      "pump" kq +`.  
    $;~  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 4FLL*LCNX  
      color = blue, 'KL!)}B$h  
      maxconnect = 1, ~Psv[b=]  
      width = 3, BhFyEY(  
      "signal" o}QtKf)W  
    w K)/m`{g  
    oMdqg4HUF  
    ; ------------- QxUsdF?p  
    diagram 5:                                  !输出图表5 e:2e5gz  
    L{)*evBL  
    "TransitionCross-sections" leY fF  
    JSKAlw  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) xn1=@0 a  
    -bJC+Yn  
    x: 1450, 2050 s,~)5nL  
    "wavelength(nm)", @x yex4A)n9"'  
    y: 0, 0.6 iH&BhbRu_  
    "cross-sections(1e-24 m&sup2;)", @y v>ygr8+C,  
    frame iLhxcM2K  
    hx gFBMARxi  
    hy m~$S]Wf  
    +,wCV2>\3  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 N5]}m:"pk  
      color = red, R>|)-"b( `  
      width = 3, LS(J%\hMDm  
      "absorption" Cx,)$!1  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 QVEGd"WvvO  
      color = blue, svT1b'=\$I  
      width = 3, hlIh(\JZ4s  
      "emission" IgxZ_2hO  
    A08b=S  
     
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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