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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
    (* b.F2m(e2  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, YB[P`Muj  
    pumped at 790 nm. Across-relaxation process allows for efficient zPn8>J<.0Q  
    population of theupper laser level. MEE]6nU  
    *)            !(*  *)注释语句 Rh39x-`Z  
    0>vm&W<?)  
    diagram shown: 1,2,3,4,5  !指定输出图表 $%/Zm*H  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响  )57OZ  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 -<.>jX  
    ; 3:"Variation of the Fiber Length"!信号输出功率vs 光纤长度的变化,仿真最佳光纤长度 -1[ri8t;nV  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 .d;/6HD[y  
    ; 5:"Transition Cross-sections"    !不同波长的跃迁横截面,横坐标波长,纵坐标为横截面 J?{uG8)  
    OF)X(bi4j  
    include"Units.inc"         !读取“Units.inc”文件中内容 )s M}BY  
    umc!KOkL  
    include"Tm-silicate.inc"    !读取光谱数据 *%8dW  
    7kO 1d{u6b  
    ; Basic fiberparameters:    !定义基本光纤参数 =^6]N~*,D  
    L_f := 4 { fiberlength }      !光纤长度 U^.$k-|k  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 QJxcH$  
    r_co := 6 um { coreradius }                !纤芯半径 o9JJ_-O"  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 "p<f#s}  
    {oO!v}]  
    ; Parameters of thechannels:                !定义光信道 C0e< _6p=  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm ],#9L   
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 Da.vyp  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W FG?B:Zl%T  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um a XwFQ,  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 qRNGe8  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 % 30&6"  
    .iw+ #  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm y2)~ljR  
    w_s := 7 um                          !信号光的半径 Hc}(+wQN%  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 Xf:-K(%e  
    loss_s := 0                            !信号光寄生损耗为0 =r`>tWs  
    8L0#<"'0  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 g8^$,  
    rN OwB2e  
    ; Function for defining themodel:   !定义模型函数,一定要有calc命令,否则函数只会被定义,但不会被执行 W;2y.2*  
    calc TJ#<wIiX  
      begin N'IzHyo.  
        global allow all;                   !声明全局变量 o d!TwGX  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 RE*;nSVFt  
        add_ring(r_co, N_Tm); V_h, UYN  
        def_ionsystem();              !光谱数据函数 > QCVsX>~  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 8g$pfHt|e  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 l]GLkE  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 i9$ -lk  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 .#CTL|x  
        finish_fiber();                                   21W>}I"0?  
      end; "H6DiPh.E  
    '(=krM9;  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 OF!(BJ L  
    show "Outputpowers:"                                   !输出字符串Output powers: . F_pP2A  
    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) ?bY'J6n.  
    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) ``U>9S"p)  
    G3m+E;o1  
    %vgn>A?]1  
    ; ------------- (FP- K  
    diagram 1:                   !输出图表1 L -<!,CASW  
    rqSeh/<iD  
    "Powers vs.Position"          !图表名称 / F9BbG{  
    -:Yx1Y3 [  
    x: 0, L_f                      !命令x: 定义x坐标范围 [/\}:#MLe  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 <$R'y6U :  
    y: 0, 15                      !命令y: 定义y坐标范围 KftZ ^mk+p  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 n}0[EE!  
    frame          !frame改变坐标系的设置 o^H.uBO{  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) Sw%^&*J  
    hx             !平行于x方向网格 "cj6i{x,~w  
    hy              !平行于y方向网格 /U+0T>(HS  
    WQK ~;GV-  
    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 g=Rl4F]  
      color = red,  !图形颜色 ;5M I8  
      width = 3,   !width线条宽度 =[`B -?  
      "pump"       !相应的文本字符串标签 XC%u`UG  
    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 Gu-6~^Km9  
      color = blue,     "]B:QeMeF!  
      width = 3, &( aw  
      "fw signal" 7\HjQ7__  
    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 8k vG<&D  
      color = blue, <>%2HRn<u  
      style = fdashed, "MOM@4\  
      width = 3, n Hz Xp:"  
      "bw signal" \  2#7B8  
    M8(N9)N  
    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 Z^wogIAV  
      yscale = 2,            !第二个y轴的缩放比例 9bwG3jn4?  
      color = magenta, E9<oA.  
      width = 3, *: }9(8d  
      style = fdashed, #%5[8~&  
      "n2 (%, right scale)" $MhfGMk!'  
    N3"O#C  
    f: 100 * n(x, 3),          !n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比 ?g+uJf  
      yscale = 2, L.X"wIs^  
      color = red, '(fQtQ%  
      width = 3, j2^Vz{  
      style = fdashed, &!N9.e:-]  
      "n3 (%, right scale)" RA^6c![  
    2K wr=t  
    @^R6}qJ  
    ; ------------- S+2we  
    diagram 2:                    !输出图表2 _D.4=2@|l8  
    {0?^$R8j  
    "Variation ofthe Pump Power" J@$KF GUs  
    A s"% u  
    x: 0, 10 <Ukeq0  
    "pump inputpower (W)", @x AO[/-Uij  
    y: 0, 10 \8Y62  
    y2: 0, 100 o=C:=  
    frame ((Uw[8#2 `  
    hx %/.yGAPkx  
    hy T]oVNy  
    legpos 150, 150 tK7v&[cI  
    yVfF *nG  
    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 CT{mzC8  
      step = 5, $-AG $1  
      color = blue, YUjKOPN  
      width = 3, "vvv@sYxi  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 ,B2p\  
      finish set_P_in(pump, P_pump_in) Ky[s& >02  
    tY@+d*u  
    f: (set_P_in(pump,x); 100 * n_av(2)),   !改变泵浦信号功率对能级2上激活粒子占比的影响  hik.c3  
      yscale = 2, zoibinm}Eg  
      step = 5, E\1e8Wyh  
      color = magenta, .VXadgM  
      width = 3, @PzRHnT*  
      "population of level 2 (%, rightscale)", F81Kxcs  
      finish set_P_in(pump, P_pump_in) R+r;V]-/  
    SiLWy=qbR  
    f: (set_P_in(pump,x); 100 * n_av(3)),   !改变泵浦信号功率对能级3上激活粒子占比的影响 s.$:.*k  
      yscale = 2, .C|dGE?,  
      step = 5, # KUN ZW  
      color = red, Lrjp  
      width = 3, >zX`qv&>  
      "population of level 3 (%, rightscale)", <IBWA0A=8a  
      finish set_P_in(pump, P_pump_in) A=96N@m6  
    HC!5AJ&+}v  
    @Ta0v:Y  
    ; ------------- g|Xjw Ti8$  
    diagram 3:                         !输出图表3 IE:;`e:\D  
    Ve\.7s  
    "Variation ofthe Fiber Length" Y>2oU`ly,  
    fA)4'7UT  
    x: 0.1, 5 TUN6`/"  
    "fiber length(m)", @x D4jZh+_|S  
    y: 0, 10 Esdv+f}4;  
    "opticalpowers (W)", @y wd*V,ZN7  
    frame nTv^][  
    hx yk0^m/=C(  
    hy K!a7Hg  
    >@tJ7m M  
    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 Z{^Pnit  
      step = 20,             +2#pP  
      color = blue, . efbORp  
      width = 3, .A F94OlE/  
      "signal output" MjW{JR)I  
    ^!6T,7 B B  
    ;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 8vx#QU8E/  
       step = 20, color = red, width = 3,"residual pump" wvI}|c  
    )uO 3v  
    ! set_L(L_f) {restore the original fiber length } J9&#);(  
    DD'RSV5]  
    w""  
    ; ------------- $Yj4&Two<  
    diagram 4:                                  !输出图表4 ~.E r  
    |@rYh-5  
    "TransverseProfiles" LHMA-0$?)  
    9gFfbvd  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) 'XI-x[w  
    s+9b.  
    x: 0, 1.4 * r_co /um _| >bOI  
    "radialposition (µm)", @x 4oPr|OKj{*  
    y: 0, 1.2 * I_max *cm^2 b6^#{))"  
    "intensity (W/ cm&sup2;)", @y Z8:'_#^@a[  
    y2: 0, 1.3 * N_Tm ;y.<I&  
    frame <3 I0$?xL  
    hx i9^m;Y)^I  
    hy Zr|\T7w 3  
    es1'z.UJ  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 \tfhF#'  
      yscale = 2, ub-vtRpm  
      color = gray, &ER,;^H `6  
      width = 3, ,-)ww:  
      maxconnect = 1, vPsf{[Kr  
      "N_dop (right scale)" :@,UPc-+  
    nXW]9zC"/  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 ?Lem|zo  
      color = red, A}CpyRVCn  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 y^:6D(SR  
      width = 3, KV|ywcGhT  
      "pump" "v+%F  
    lT+N{[kLt*  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 $ItPUYi";  
      color = blue, 8]&lUMaqVZ  
      maxconnect = 1, u4~( 0  
      width = 3, 70E@h=oQ  
      "signal" Dl_SEf6b  
    S^ JUQx7  
    HE*P0Y f=  
    ; ------------- C44*qiG.  
    diagram 5:                                  !输出图表5 J:2Su1"ODh  
     p/?TU  
    "TransitionCross-sections" 8zH/a   
     o[>p  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) D}K/5iU]a  
    Ffr6P }I  
    x: 1450, 2050 aR0v qRF  
    "wavelength(nm)", @x dMoN19F  
    y: 0, 0.6 F>rf cW2  
    "cross-sections(1e-24 m&sup2;)", @y n4G53+y'  
    frame \?NT,t=3J  
    hx J.pe&1  
    hy @-BgPDi.Z  
    "dBCS  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 AK5$>Pkvk  
      color = red, Wg5i#6y8w  
      width = 3, {#%;HqP  
      "absorption" p&(~c/0  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 *,p16"Q;  
      color = blue, D(gpF85t  
      width = 3, ]@7]mu:oL  
      "emission" n`g:dz  
    OvW/{  
     
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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