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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
    (* N>YSXh`W`y  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, 2A@oa9  
    pumped at 790 nm. Across-relaxation process allows for efficient 'I+M*Iy  
    population of theupper laser level. A?lR[`'u\  
    *)            !(*  *)注释语句 [ dVBsi  
    AaxQBTB  
    diagram shown: 1,2,3,4,5  !指定输出图表 Al6%RFt  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 A D<>)(  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 {]8|\CcY?  
    ; 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 P(Rl/eyRM  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 RQ[/s lg  
    ; 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 P*?|E@;s`  
    `JDZR:bMaT  
    include"Units.inc"         !读取“Units.inc”文件中内容 %Vltc4QU  
    eGg6wd  
    include"Tm-silicate.inc"    !读取光谱数据 p`A2^FS)  
    n.a2%,|v  
    ; Basic fiberparameters:    !定义基本光纤参数 QwpX3 k6  
    L_f := 4 { fiberlength }      !光纤长度 ;` Xm?N  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 Y$"m*0  
    r_co := 6 um { coreradius }                !纤芯半径 $z*"@  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 s@"|o3BX  
    Ssz;d&93  
    ; Parameters of thechannels:                !定义光信道 mF~]P8  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm |n tWMm:(  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 xR%NiYNQz  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W r<n:o7  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um w{dRf!b69  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 Y DHP-0?  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 EATVce]T  
    0fBwy/:  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm R_g(6l"3R^  
    w_s := 7 um                          !信号光的半径 5yK#;!:h  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 v X6JjE!  
    loss_s := 0                            !信号光寄生损耗为0 Ri`6X_xU  
    L[9Kh&c  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 LI3L~6A>  
    - A@<zqu  
    ; 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 <F&XT@  
    calc }riM-  
      begin k'|yUJ,  
        global allow all;                   !声明全局变量 k) Lhzr[  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 S .x>w/  
        add_ring(r_co, N_Tm); i~v[3e9y7  
        def_ionsystem();              !光谱数据函数 LXxQI(RO  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 X[tB^`  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 Gvdok<o  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 \db=]L=|  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 SE'|||B  
        finish_fiber();                                   9'sZi}rT  
      end; wGT>Xh!  
    _<mY|  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 }za pN v  
    show "Outputpowers:"                                   !输出字符串Output powers: `W@jo~ y<  
    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) !idVF!xG  
    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) ;T0X7MNx  
    \6/ Gy!0h-  
    |y0k}ed  
    ; ------------- # }}6JM  
    diagram 1:                   !输出图表1 Dzu//_u  
    s:xJ }Ll  
    "Powers vs.Position"          !图表名称 GXD<X_[  
    Tq )hAZ  
    x: 0, L_f                      !命令x: 定义x坐标范围 W<#!He  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 =8`KGeP$  
    y: 0, 15                      !命令y: 定义y坐标范围 _oG%bNM  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 GT] >  
    frame          !frame改变坐标系的设置 pL[3,.@WA  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) Hik=(pTu>  
    hx             !平行于x方向网格 ~XWBLU<  
    hy              !平行于y方向网格 r_Ou\|jU  
    8LPWT!S  
    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 Iq,h}7C8'  
      color = red,  !图形颜色 }ff^^7_  
      width = 3,   !width线条宽度 HbB8A#u  
      "pump"       !相应的文本字符串标签 PknKzrEG:>  
    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 ~4FzA,,  
      color = blue,     2BF455e   
      width = 3, yevJA?C4 v  
      "fw signal" 0',buJncV  
    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 s1::\&`za  
      color = blue, /8l@n dZf  
      style = fdashed, rA?< \*  
      width = 3, x;bA\b  
      "bw signal" pT~3< ,  
    =$y J66e  
    f: 100 * n(x, 2),    !n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 Vrlqje_Q  
      yscale = 2,            !第二个y轴的缩放比例 F|m &n&  
      color = magenta, 6m]?*k1HC  
      width = 3, w{L9-o3A  
      style = fdashed, McS]aJfrk  
      "n2 (%, right scale)" /E\04Bs  
    C%E~9_w  
    f: 100 * n(x, 3),          !n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比  *$DD+]2  
      yscale = 2, SYsO>`/ )  
      color = red, Hq<4G:#  
      width = 3, ,aS+RJNM  
      style = fdashed, ND.(N'/O  
      "n3 (%, right scale)" /\mYXi \  
    u$5.GmKm  
    C<9GdN  
    ; ------------- #m<uG5l`  
    diagram 2:                    !输出图表2 r 9M3rj]  
    DxN\ H"  
    "Variation ofthe Pump Power" *$R9'Yo}F  
    - uO(qUa#  
    x: 0, 10 4B[pQlg  
    "pump inputpower (W)", @x T;{}bc&I  
    y: 0, 10 gq*W 0S  
    y2: 0, 100 r 20!   
    frame ^["D>@yIR  
    hx Dmy=_j?ej  
    hy kiyKL:6D|  
    legpos 150, 150 K+M\E[1W  
    II _CT=  
    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 3w p@OF_  
      step = 5, H$^9#{  
      color = blue, f9Xa}*  
      width = 3, 6+ptL-Zt<  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 e2V;6N  
      finish set_P_in(pump, P_pump_in) $gYGnh_,Q  
    vyWx{ @  
    f: (set_P_in(pump,x); 100 * n_av(2)),   !改变泵浦信号功率对能级2上激活粒子占比的影响 37 ?X@@Z=  
      yscale = 2, q^^R|X1  
      step = 5, }#E]efjs  
      color = magenta, 1/ j >|  
      width = 3, %qeNC\6N  
      "population of level 2 (%, rightscale)", {0fQE@5@  
      finish set_P_in(pump, P_pump_in) 'ta&qp  
    bcu Uej:  
    f: (set_P_in(pump,x); 100 * n_av(3)),   !改变泵浦信号功率对能级3上激活粒子占比的影响 D(|+z-}M  
      yscale = 2, (Lh!7g/0N  
      step = 5, @44*<!da  
      color = red, L$!2<eK  
      width = 3, @J6r;4|&  
      "population of level 3 (%, rightscale)", kt_O=  
      finish set_P_in(pump, P_pump_in) I(&N2L$-  
    %1GKN|7  
    uuh._H}-  
    ; ------------- _^RN$4.R>  
    diagram 3:                         !输出图表3 Uh1UZ r  
    x@O )QaBN!  
    "Variation ofthe Fiber Length" !~7lY]_U  
    #7:ah  
    x: 0.1, 5 -R];tpddR5  
    "fiber length(m)", @x {`)o xzR  
    y: 0, 10 ${ DSH  
    "opticalpowers (W)", @y V^n=@CZT9C  
    frame b"td]H3h  
    hx =1!.g"0  
    hy !,b&e  
    `RURC"  
    f: (set_L(x);P_out(signal_fw)),     !改变光纤长度对信号光输出功率的影响 ;F%EW`7  
      step = 20,             '?NMQ  
      color = blue, h5aPRPUg  
      width = 3, m`xYd  
      "signal output" t(.vX  
    bh\2&]Di/  
    ;f: (set_L(x);P_out(pump)),                     !改变光纤长度对泵浦信号输出功率的影响 Iv9U4  
       step = 20, color = red, width = 3,"residual pump" D]'8BS3  
    `GY]JVW  
    ! set_L(L_f) {restore the original fiber length } `W1TqA  
    { Ngut  
    4 s9^%K\8{  
    ; ------------- e&[~}f?  
    diagram 4:                                  !输出图表4 |L}tAS`8  
    |VyN>&r~6  
    "TransverseProfiles" i"DyXIrk2  
    6y?uH; SL  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) 0d~?|Nv -  
    [(8s\>T  
    x: 0, 1.4 * r_co /um W_/$H_04+  
    "radialposition (µm)", @x &g*1If  
    y: 0, 1.2 * I_max *cm^2 mB bGj3u;  
    "intensity (W/ cm&sup2;)", @y J=O_nup6C  
    y2: 0, 1.3 * N_Tm G$/Qcr6W<  
    frame g86^Z%c(k  
    hx I>-1kFma;  
    hy Pum&\.l  
    Ts=TaRwWf  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 fp3`O9+em  
      yscale = 2, pOl6x iMx  
      color = gray, 7fT_]H8  
      width = 3, &f)pU>Di  
      maxconnect = 1, D7B g!*  
      "N_dop (right scale)" H2+Ijn19E  
    dd6l+z  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 Rp_}_hL0  
      color = red, (CYQ>)a  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 Tz\v.&? $  
      width = 3, :V)=/mR  
      "pump" mv/ Nz?  
    'auYmX  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 2j{T8F\]  
      color = blue, 00Ye ]j_  
      maxconnect = 1, d:z7 U  
      width = 3, CX5>/  
      "signal" 4a.8n!sys  
    { "f} }}l  
    |NFDrm  
    ; ------------- f/,8sGkX;  
    diagram 5:                                  !输出图表5 y;.5AvfD  
    mGw*6kOIS  
    "TransitionCross-sections" hb)83mH}  
    H$zDk  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) >#.du}t  
    [ zCKJR  
    x: 1450, 2050 QbWeQ[V{  
    "wavelength(nm)", @x (~PT(B?  
    y: 0, 0.6 es$<Vkbp  
    "cross-sections(1e-24 m&sup2;)", @y ]qk`Yi  
    frame JY D\VaW  
    hx Orlf5 {P  
    hy m='_ O+ $  
    ,LU|WXRB  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 Y5mk*Q#q  
      color = red,  y]ya.YG  
      width = 3, HJe6h. P  
      "absorption" ,!^;<UR:  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 t6%zfm   
      color = blue, j 4(f1  
      width = 3, M^/ZpKeT"  
      "emission"  ~>3#c#[  
    2(9~G|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