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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
    (* estiS  
    Demo for program"RP Fiber Power": thulium-doped fiber laser,  U${W3Ra  
    pumped at 790 nm. Across-relaxation process allows for efficient Os<E7l zqO  
    population of theupper laser level. >[Vc$[62  
    *)            !(*  *)注释语句 _Gq6xv\b1  
    ZGZNZ}~#  
    diagram shown: 1,2,3,4,5  !指定输出图表 8</wQ6&|  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 %_W4\  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 :V.@:x>id  
    ; 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 @e<( o UE  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 <-k!  
    ; 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 Bh&pZcm|  
    ^:-GPr  
    include"Units.inc"         !读取“Units.inc”文件中内容 Ysu\CZGX  
    R` < ^/h  
    include"Tm-silicate.inc"    !读取光谱数据 [XY%<P3D  
    $Wj= V  
    ; Basic fiberparameters:    !定义基本光纤参数 k^Qf |  
    L_f := 4 { fiberlength }      !光纤长度 s21} a,eB  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 gl+d0<R zw  
    r_co := 6 um { coreradius }                !纤芯半径 J[<Zy^"Y;  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 w*6b%h%ww  
    {|u"I@M*O  
    ; Parameters of thechannels:                !定义光信道 {]+t<  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm y;ElSt;S  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 CIIjZ)T  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W esJ7#Gxt  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um wNHn.  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 tQ{/9bN?P  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 bvtpqI QZ  
    o=YOn&@%  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm {[2o  
    w_s := 7 um                          !信号光的半径 ]QaKXg)3q  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 8)0]cX  
    loss_s := 0                            !信号光寄生损耗为0 ?z1v_Jh  
    MOD&3>NI  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 o^/ #i`)  
    3Cj)upc  
    ; Function for defining themodel:   !定义模型函数,一定要有calc命令,否则函数只会被定义,但不会被执行 elR'e6Q  
    calc _4N.]jr5  
      begin &q>8D'  
        global allow all;                   !声明全局变量 P{9:XSa%  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 <}J !_$A  
        add_ring(r_co, N_Tm); {T-\BTh&Q  
        def_ionsystem();              !光谱数据函数 _uO$=4Sd  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 #zl1#TC{(  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 :dt[ #  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 Y]([K.I=  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 K[y")ooE<j  
        finish_fiber();                                   B!/kC)bF:  
      end; 8b?nr;@  
    fi HE`]0  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 ;}+M2Ec51  
    show "Outputpowers:"                                   !输出字符串Output powers: ,LA'^I?  
    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) (C. $w  
    show"signal:   ",P_out(signal_fw):d3:"W" !输出字符串signal:和计算值(格式为3个有效数字,单位W) iI<c  
    2G~{x7/[@  
    D;!sH?J@+  
    ; ------------- Y_Gd_+oJ  
    diagram 1:                   !输出图表1 9;L4\  
    XN<!.RCw  
    "Powers vs.Position"          !图表名称 {}$rN@OM$  
    U(f@zGV  
    x: 0, L_f                      !命令x: 定义x坐标范围 I#MPJ@*WT  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 >.qFhO\1so  
    y: 0, 15                      !命令y: 定义y坐标范围 futYMoV  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 QDn_`c  
    frame          !frame改变坐标系的设置 ^# $IoW  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) 1x_EAHZ>7  
    hx             !平行于x方向网格 4;L|Ua  
    hy              !平行于y方向网格 4C`RxQJM  
    >2s6Y  
    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 - jZAvb  
      color = red,  !图形颜色 7"Xy8]i{z  
      width = 3,   !width线条宽度 0HWSdf|w  
      "pump"       !相应的文本字符串标签 sc]#T)xG  
    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 \) dp  
      color = blue,     7SHllZ  
      width = 3, 9CS" s_  
      "fw signal" 0Ye/  
    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 XdJD"|,h  
      color = blue, ^P9mJ:  
      style = fdashed, (n kg  
      width = 3, ,&,%B|gT]  
      "bw signal" KRxJ2  
    .8QhJHwd  
    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 wxHd^b  
      yscale = 2,            !第二个y轴的缩放比例 #+o$Tg  
      color = magenta, _AF$E"f@  
      width = 3, gqv+|:#  
      style = fdashed, vT#R>0@mi  
      "n2 (%, right scale)" d9JAt-6z2  
    =-oP,$k  
    f: 100 * n(x, 3),          !n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比 Y!j/,FU  
      yscale = 2, _t-6m2A  
      color = red, <9&GOaJ  
      width = 3, p|gVIsg[-e  
      style = fdashed, :WWHEZK  
      "n3 (%, right scale)" FZgf"XM>  
    ,IhQ%)l  
    M;XU"8  
    ; ------------- (72%au  
    diagram 2:                    !输出图表2 ?xwi2<zz  
    3DO*kM1s@  
    "Variation ofthe Pump Power" 2(!W 9#]  
    j?C[ids<  
    x: 0, 10 Q.$/I+&j  
    "pump inputpower (W)", @x _8$xsj4_  
    y: 0, 10 $E[O}+L$#  
    y2: 0, 100 qf K gNZ  
    frame NCg("n,jx  
    hx y3( ~8n  
    hy 8o:h/F  
    legpos 150, 150 2. nT k   
    O)^F z:  
    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 ~<u\YIJ  
      step = 5, d0T 8Cwc b  
      color = blue, ?6*\  M  
      width = 3, 1g=T"O&=  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 +9LzDH  
      finish set_P_in(pump, P_pump_in) <>KQ8:  
    u L 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 R[j'<gd.  
      yscale = 2, W/RB|TMT  
      step = 5, DBy%"/c  
      color = magenta, ih("`//nP  
      width = 3, !}|'1HIC  
      "population of level 2 (%, rightscale)", NfQ QJ@*  
      finish set_P_in(pump, P_pump_in) UK'8cz9  
    i*l =xW;bM  
    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 M`7lYw\Or!  
      yscale = 2, Jm=3 %H  
      step = 5, TyO]|Q5  
      color = red, D Q4O  
      width = 3, SIM> Lz  
      "population of level 3 (%, rightscale)", F+5 5p8  
      finish set_P_in(pump, P_pump_in) *pO`sC>  
    <bJ|WS|  
    PQi(Oc  
    ; ------------- ~d<&OL  
    diagram 3:                         !输出图表3 yEB#*}K?  
    dM}c-=w`  
    "Variation ofthe Fiber Length" GS>YfJ&DZ  
    ENA"T-p  
    x: 0.1, 5 $2]>{g  
    "fiber length(m)", @x ?w'03lr%  
    y: 0, 10 OGH,K'l  
    "opticalpowers (W)", @y Cw!tB1D  
    frame  ^[I> #U  
    hx 3 q8S  
    hy |U'`Sc  
    <2O#!bX1  
    f: (set_L(x);P_out(signal_fw)),     !改变光纤长度对信号光输出功率的影响 hw`pi6  
      step = 20,             ,ZYPffu<*  
      color = blue, Lf.Ia *R:  
      width = 3, 1 "t9x.  
      "signal output" HOPl0fY$L  
    $<VH~Q<  
    ;f: (set_L(x);P_out(pump)),                     !改变光纤长度对泵浦信号输出功率的影响 ijcF[bm E  
       step = 20, color = red, width = 3,"residual pump" a$iDn_{  
    Qo]qs+  
    ! set_L(L_f) {restore the original fiber length } TrgKl2xfx  
    N3Q .4? z9  
    r^E(GmW  
    ; ------------- ^!O!HMX0  
    diagram 4:                                  !输出图表4 o*~=NoR  
    tJ7tZ~Ak  
    "TransverseProfiles" 7^!iGhI]r  
    qs8^qn0A  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) vEE\{1  
    mWP&N#vwh  
    x: 0, 1.4 * r_co /um Q`O~f<a  
    "radialposition (µm)", @x P=P']\`p+  
    y: 0, 1.2 * I_max *cm^2 .f[z_% ar  
    "intensity (W/ cm&sup2;)", @y `.~*pT*u  
    y2: 0, 1.3 * N_Tm @5 ??`n  
    frame qm9=Ga5  
    hx [k%u$  
    hy Tqs|2at<t  
    &\ad.O/Q  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 b'4}=Xpn  
      yscale = 2, ;i [;%  
      color = gray, wrJ" (:VZ  
      width = 3, ;S&anC#E  
      maxconnect = 1, t8lGC R  
      "N_dop (right scale)" /nh3/[u  
    iTT7<x  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 1=X1<@*  
      color = red, 1'\s7P  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 JCB3 BZg7&  
      width = 3, }QCn>LXE  
      "pump" g&_f%hx?  
    mYk~ ]a-  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 GUJ?6;  
      color = blue, UsCaO<A  
      maxconnect = 1, hoiC J}us  
      width = 3, V~-tp^  
      "signal" ,CBE&g  
    F[B=sI  
    8h=K S   
    ; ------------- A^|~>9  
    diagram 5:                                  !输出图表5 #Hl?R5  
    3/c%4b.Z  
    "TransitionCross-sections" k|jr+hmn":  
    m3(p7Z^Bq  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) fCX8s(|F  
    s? Gv/&  
    x: 1450, 2050 F{ C2% s#  
    "wavelength(nm)", @x CLuQ=-[|  
    y: 0, 0.6 +'VYqu/  
    "cross-sections(1e-24 m&sup2;)", @y L@?3E`4/v  
    frame wT,=C'  
    hx s._,IW;   
    hy 4~;M\h  
    V he$vH  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 .jbxA2  
      color = red, ,nV4%Aa  
      width = 3, =L?2[a$2;  
      "absorption" <<Z, 1{3F  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 I%<pS ,p  
      color = blue, X]W(  
      width = 3, }YM[aq?6  
      "emission" N>)Db  
    Ue>{n{H"y  
     
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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