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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
    (* w@![rH6~F  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, ~=P#7l\o1  
    pumped at 790 nm. Across-relaxation process allows for efficient gLDO|ADni  
    population of theupper laser level. q`Rc \aWB%  
    *)            !(*  *)注释语句 5cUz^ >  
    '?Jz8iu-  
    diagram shown: 1,2,3,4,5  !指定输出图表 U/#X,Bi~  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 `i `F$;  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 #Dz. 58A  
    ; 3:"Variation of the Fiber Length"!信号输出功率vs 光纤长度的变化,仿真最佳光纤长度 'bQjJRq!  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 "Wb>y*S   
    ; 5:"Transition Cross-sections"    !不同波长的跃迁横截面,横坐标波长,纵坐标为横截面 B>;`$-  
    EXF|; @-"  
    include"Units.inc"         !读取“Units.inc”文件中内容 Z[ 53cVT^  
    DqJzsk'd3  
    include"Tm-silicate.inc"    !读取光谱数据 qo*%S  
    [mcER4]}  
    ; Basic fiberparameters:    !定义基本光纤参数 al{}_1XoU  
    L_f := 4 { fiberlength }      !光纤长度 Hk 0RT%PK  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 I.6 qA *  
    r_co := 6 um { coreradius }                !纤芯半径 a5k![sw\  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 D7lRZb  
    ]as+gZ8  
    ; Parameters of thechannels:                !定义光信道 9Ro7xSeD  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm \Dx;AKs  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 Z[G[.\0  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W A4tb>O M  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um D[ v2#2  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 Yq-Vwh/  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 MqAN~<l [  
    0{'m":D9  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm 4T>d%Tt+)  
    w_s := 7 um                          !信号光的半径 V r7L9%/wg  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 &5y|Q?  
    loss_s := 0                            !信号光寄生损耗为0 D~zk2  
    -NPX;e$<  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 0: Nw8J  
    ROr|n]aJj  
    ; Function for defining themodel:   !定义模型函数,一定要有calc命令,否则函数只会被定义,但不会被执行 MP|$+yuR~  
    calc P,s>xM  
      begin <{cf'"O7)  
        global allow all;                   !声明全局变量 M^&^g  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 {O!B8a    
        add_ring(r_co, N_Tm); W_L;^5Y;m  
        def_ionsystem();              !光谱数据函数 v ;nnr0;  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 cz41<SFL  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 E#~J"9k98  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 Ez+8B|0P  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 T0X+\&W  
        finish_fiber();                                   <xlyk/  
      end; Y#zHw< <E  
    f;%=S:3  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 tx$`1KA  
    show "Outputpowers:"                                   !输出字符串Output powers: c=f;3N  
    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) >x*ef]aS  
    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) `hDH7u!U.  
    Pyp#'du>  
    LO;6g~(1  
    ; ------------- ID~}pEQ  
    diagram 1:                   !输出图表1 ncpNesB  
    GGU>={D)  
    "Powers vs.Position"          !图表名称 /[I#3|  
    qm6X5T  
    x: 0, L_f                      !命令x: 定义x坐标范围 $#-O^0D  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 5i-VnG  
    y: 0, 15                      !命令y: 定义y坐标范围 (H;,E-  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 {XH3zMk[  
    frame          !frame改变坐标系的设置 Zg3 /,:1  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) VKcVwq  
    hx             !平行于x方向网格 pwVaSnre`  
    hy              !平行于y方向网格 7;a  
    Z=be ki]  
    f: P(pump, x),    !命令f: 定义函数图;P(pump, x)函数是计算x位置处的泵浦光功率 G4^6o[x  
      color = red,  !图形颜色 r8>Qs RnU%  
      width = 3,   !width线条宽度 fwi -   
      "pump"       !相应的文本字符串标签 y=2nV  
    f: P(signal_fw, x),  !P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 m>f8RBp]'  
      color = blue,     t]hfq~Ft  
      width = 3, +t8#rT ^B  
      "fw signal" FK @Gd)(  
    f: P(signal_bw, x),   !P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 0.&-1pw  
      color = blue, dN@C)5pm5`  
      style = fdashed, tu^C<MV  
      width = 3, _Mi*Fvj  
      "bw signal" 'yR\%#s6  
    t4UL|fI  
    f: 100 * n(x, 2),    !n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 :Q}Zb,32  
      yscale = 2,            !第二个y轴的缩放比例 :)F0~Q  
      color = magenta, |#sY(1  
      width = 3, U^kk0OT^  
      style = fdashed, ),lE8A{ H  
      "n2 (%, right scale)" k54b@U52 h  
    ,+v>(h>q  
    f: 100 * n(x, 3),          !n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比 -ZoAbp$  
      yscale = 2, $ncP#6  
      color = red, rQ(u@u;  
      width = 3, M63t4; 0A  
      style = fdashed, hVNT  
      "n3 (%, right scale)" l6N"{iXU  
    ir~4\G!  
    1sq1{|NW~  
    ; ------------- :464~tHI[`  
    diagram 2:                    !输出图表2 L-Mf{z  
    drJUfsxV  
    "Variation ofthe Pump Power" yJdkDVxYr  
    \eXuNv_  
    x: 0, 10 ~&D5RfK5f  
    "pump inputpower (W)", @x P:UR:y([  
    y: 0, 10 L0*f(H  
    y2: 0, 100 v)~!HCG  
    frame QO %;%p*  
    hx \=H+m%  
    hy {[bB$~7Eu  
    legpos 150, 150 s14 ot80)  
    Q zY5S0  
    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 UYGO|lkEU  
      step = 5, 2tS,q_-=  
      color = blue, oGL2uQXX  
      width = 3, 9O\yIL  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 X.AE>fx*h  
      finish set_P_in(pump, P_pump_in) 6%MM)Vj+u  
    |eksvO'~  
    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 K/$5SN1  
      yscale = 2, lt%9Zgr[u  
      step = 5, _Nf%x1m5s  
      color = magenta, !Y*O0_  
      width = 3, {5 (M   
      "population of level 2 (%, rightscale)", |N|[E5Cn  
      finish set_P_in(pump, P_pump_in) P}vk5o'  
    M&KJZ  
    f: (set_P_in(pump,x); 100 * n_av(3)),   !改变泵浦信号功率对能级3上激活粒子占比的影响 W(EN01d\  
      yscale = 2, ZeH=]G4Zv7  
      step = 5, T/tCX[}  
      color = red, VP^{-mDph  
      width = 3, x5k6"S"1,  
      "population of level 3 (%, rightscale)", 5>-~!Mg1  
      finish set_P_in(pump, P_pump_in) 7b(r'b@N  
    >[<f\BN|  
    B %  
    ; ------------- Z& bIjp  
    diagram 3:                         !输出图表3 HG3iK  
    #(-?i\i  
    "Variation ofthe Fiber Length" 0QBK(_O`  
    kQ|phtbI  
    x: 0.1, 5 ~I@ % ysR  
    "fiber length(m)", @x k;HI-v  
    y: 0, 10 _8wT4|z5  
    "opticalpowers (W)", @y eY_BECJ+OO  
    frame 6>[J^k%~w)  
    hx <<&SyP  
    hy ew,g'$drD  
    ?}No'E1!I  
    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 x) R4_ 3  
      step = 20,             iThf\  
      color = blue, +XAM2uN5_.  
      width = 3, x";4)u=  
      "signal output" ~zFwSF  
    =g)SZK  
    ;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 uf`/-jY  
       step = 20, color = red, width = 3,"residual pump" "F?p Y@4  
    ]T%wRd5&-  
    ! set_L(L_f) {restore the original fiber length } B] PG  
    dl+c+w"  
    j:0< tj E  
    ; ------------- _ !k\~4U  
    diagram 4:                                  !输出图表4 e*39/B0S  
    1r<'&f5  
    "TransverseProfiles" SA~oGgk=P  
    4TcW%  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) G$jw#a[L  
    q^b12@.  
    x: 0, 1.4 * r_co /um WB"90!  
    "radialposition (µm)", @x o3.b='HAm  
    y: 0, 1.2 * I_max *cm^2 H4BuxM_r  
    "intensity (W/ cm&sup2;)", @y GX N:=  
    y2: 0, 1.3 * N_Tm G.qjw]Llf  
    frame /?S,u,R  
    hx q ;e/gP2  
    hy @XH@i+ {B  
    _ Uv3g lK  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 <\L=F8[  
      yscale = 2, &izk$~  
      color = gray, XZxzw*Y1J  
      width = 3, Z`ZML+;~6  
      maxconnect = 1, /re0"!0y  
      "N_dop (right scale)" Zrq\:KxX  
    20)8e!jP  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 G4"[ynlWV  
      color = red, a'7RzN ,]  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 Jy0(g T  
      width = 3, <'O|7. ^^  
      "pump" &usum~@  
    r,ep{ p  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 n&FRjq9y  
      color = blue, E>kgEfzxP  
      maxconnect = 1, "=UhTE  
      width = 3,  R'aA\k-  
      "signal" 2XV3f$,H  
    KvlLcE~`o  
    HG)h,&nc-  
    ; ------------- @Cl1G  
    diagram 5:                                  !输出图表5 #|6M*;lN|  
    )"s(;kU!  
    "TransitionCross-sections" SOvo%L@  
    (E \lLlN  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) a7e.Z9k!  
    Ki%RSW(_`  
    x: 1450, 2050 YF13&E2`\  
    "wavelength(nm)", @x hJ(S]1B~G  
    y: 0, 0.6 N)X51;+  
    "cross-sections(1e-24 m&sup2;)", @y A )xfO-  
    frame cnM`ywKW  
    hx XI5q>cd\Sz  
    hy yu=(m~KX   
    I(+%`{Wv  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 Ml+O - 3T  
      color = red, bYy7Ul6]  
      width = 3, Pol c.  
      "absorption" h5@JS1cY  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 @;{iCVW  
      color = blue, 3@mW/l>X  
      width = 3, j6BFh=?D  
      "emission" nY_+V{F  
    \_|r>vQ  
     
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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