切换到宽版
  • 广告投放
  • 稿件投递
  • 繁體中文
    • 2285阅读
    • 1回复

    [原创]RP Fiber Power仿真设计掺铥光纤激光器代码详解 [复制链接]

    上一主题 下一主题
    离线小火龙果
     
    发帖
    932
    光币
    2176
    光券
    0
    只看楼主 倒序阅读 楼主  发表于: 2020-05-28
    (* 8G|kKpX  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, yq\p%z$:  
    pumped at 790 nm. Across-relaxation process allows for efficient O" ,*N  
    population of theupper laser level. hd_<J]C  
    *)            !(*  *)注释语句 oC1Nfc+  
    U9:I"f,  
    diagram shown: 1,2,3,4,5  !指定输出图表 l5CFm8%  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 5YnTGf&  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 ibQN pIz  
    ; 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 q;=!=aRg  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 QX|y};7\e  
    ; 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 H+F>#  
    Q*8=^[x  
    include"Units.inc"         !读取“Units.inc”文件中内容 b=Oec%Adx  
    *_!}g ]  
    include"Tm-silicate.inc"    !读取光谱数据 o@A|Lm.   
    )~H&YINhn  
    ; Basic fiberparameters:    !定义基本光纤参数 3.<E{E!F  
    L_f := 4 { fiberlength }      !光纤长度 8;1,saA_9  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 ;]sbz4?  
    r_co := 6 um { coreradius }                !纤芯半径 SH/^qDT'  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 fFJu]  
    oS Apa  
    ; Parameters of thechannels:                !定义光信道 S_dM{.!Z(,  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm M Qlx&.>  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 vC>8:3Z aq  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W OVa38Aucr3  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um .|z8WF*  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 oeIza<:=R  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 U6yZKK  
    Hw 1cc3!  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm Z@ QJ5F1y  
    w_s := 7 um                          !信号光的半径 Eu1t*>ZL  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 GLE"[!s]f  
    loss_s := 0                            !信号光寄生损耗为0 F%^)oQT+c  
    iFkXt<_A  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 V"DilV$v  
    Uy5G,!  
    ; 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 :*dfP/GO  
    calc 8(|lP58~  
      begin ,AEaW  
        global allow all;                   !声明全局变量 U3b&/z|b?  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 I*hzlE  
        add_ring(r_co, N_Tm); Z[?zaQ$  
        def_ionsystem();              !光谱数据函数 w-wap  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 w  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 c-q=Ct  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 %+0V0.  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 \:D"#s%x  
        finish_fiber();                                   _fE$KaP  
      end; r0(*]K:.  
    W~qVZ(G*U  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 Ic')L*i7O  
    show "Outputpowers:"                                   !输出字符串Output powers: 8c^Hfjr0  
    show"pump:     ", P_out(pump):d3:"W"  !输出字符串pump:和计算值(格式为3个有效数字,单位W) =--oH'P=M  
    show"signal:   ",P_out(signal_fw):d3:"W" !输出字符串signal:和计算值(格式为3个有效数字,单位W) EEdU\9DH(  
    bTbF  
    nC(<eL  
    ; ------------- /;clxtus  
    diagram 1:                   !输出图表1 s5 ($b  
    M" R= ;n  
    "Powers vs.Position"          !图表名称 r%412 #  
    ;\(X;kQi  
    x: 0, L_f                      !命令x: 定义x坐标范围 <tT.m[qg  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 @e:= D  
    y: 0, 15                      !命令y: 定义y坐标范围 + [~)a 4#  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 ~Y3X*  
    frame          !frame改变坐标系的设置  /wT<p  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) GvI8W)d3,R  
    hx             !平行于x方向网格 =:;K nS  
    hy              !平行于y方向网格 H?cJ'Q, 5  
    8KMo!p\i  
    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 HvLx  
      color = red,  !图形颜色 $L"h|>b\o  
      width = 3,   !width线条宽度 )];Bo.QA  
      "pump"       !相应的文本字符串标签 CRs@x` 5ue  
    f: P(signal_fw, x),  !P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 FW)VyVFmk  
      color = blue,     p-XO4Pc 6  
      width = 3, Ge1b_?L_  
      "fw signal" 2uLBk<m5c  
    f: P(signal_bw, x),   !P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 -OXC;y  
      color = blue, TE% i   
      style = fdashed, rt'pc\|O&  
      width = 3, hMnm>  
      "bw signal" mnL+@mm  
    l!mx,O`  
    f: 100 * n(x, 2),    !n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 _"[Ls?tRX  
      yscale = 2,            !第二个y轴的缩放比例 G.3yuok9  
      color = magenta, %&j \:X~A  
      width = 3, d<Dm(   
      style = fdashed, -CLBf'a  
      "n2 (%, right scale)" TyY%<NCIb  
    ~'v9/I-"  
    f: 100 * n(x, 3),          !n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比 JA~q}C7A7o  
      yscale = 2, 6uIgyO*;k  
      color = red, se=;vp]3a  
      width = 3, B *%ey?  
      style = fdashed, c8LMvL  
      "n3 (%, right scale)" <b:xyHS  
    OJiwI)a9  
    QJ+Ml  
    ; ------------- mgMa)yc!dp  
    diagram 2:                    !输出图表2 A DVUx}  
    h43py8v  
    "Variation ofthe Pump Power" |y pX O3  
    "x3x$JQZy  
    x: 0, 10 jN-!1O._G  
    "pump inputpower (W)", @x 4W#DLip9  
    y: 0, 10 XAZPbvG|$  
    y2: 0, 100 #I1q,fm  
    frame " v<O)1QT  
    hx //'&a-%$^  
    hy +ZOKfX  
    legpos 150, 150 ,b4oV  
    WK0:3q(P  
    f: (set_P_in(pump, x);P_out(signal_fw)), !set_P_in(pump,x)改变泵浦信道功率;P_out(signal_fw)输出前向信号光 Vh?RlIUA  
      step = 5, (67byO{  
      color = blue, X;n09 L`CB  
      width = 3, +)LCYDRV7  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 0 9qfnQG  
      finish set_P_in(pump, P_pump_in) BA[ uO3\4  
    ,^RZ1tLz  
    f: (set_P_in(pump,x); 100 * n_av(2)),   !改变泵浦信号功率对能级2上激活粒子占比的影响 IhRdn1&  
      yscale = 2, 6-z(34&N  
      step = 5, g(9kc<`3'D  
      color = magenta, 8@Bm2?$}g  
      width = 3, "  sC]z}  
      "population of level 2 (%, rightscale)", v*OV\h.  
      finish set_P_in(pump, P_pump_in) =R<92v  
    J/IRCjQ}  
    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`KD64  
      yscale = 2, $01csj  
      step = 5, NcBz("  
      color = red, 'E&tEbY  
      width = 3, `NTtw;%Y  
      "population of level 3 (%, rightscale)", CF 3V)3}  
      finish set_P_in(pump, P_pump_in) ,}O33BwJp  
    Si@ 6'sw  
    Wm}gnNwA  
    ; ------------- qV;I<AM  
    diagram 3:                         !输出图表3 f >.^7.is  
    Y'5(exW  
    "Variation ofthe Fiber Length" YUHiD *  
    :dpwr9)  
    x: 0.1, 5 KK6fRtKv>q  
    "fiber length(m)", @x vZW[y5   
    y: 0, 10 $s4.Aj  
    "opticalpowers (W)", @y J ?EDz,  
    frame mz+UkA'  
    hx &_u.q/~   
    hy y$9! rbL  
    >cLh$;l  
    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 ^/6P~iK'  
      step = 20,             YWs?2I  
      color = blue, b kc*it  
      width = 3, Oet+$ b  
      "signal output" \7%#4@;?  
    R}cNhZC  
    ;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 }Z{FPW.QK  
       step = 20, color = red, width = 3,"residual pump" 8\^A;5  
    !/!ga)Y  
    ! set_L(L_f) {restore the original fiber length } Wa7wV 9  
    d^J)Mhju  
    #UhH  
    ; ------------- ca,W:9#.xn  
    diagram 4:                                  !输出图表4 nJGs,~"  
    El@*Fo  
    "TransverseProfiles" ZX64kk+  
    vzFp Xdt  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) [8^q3o7n  
    GGhk~H4OP  
    x: 0, 1.4 * r_co /um K, I  
    "radialposition (µm)", @x mLpM8~L  
    y: 0, 1.2 * I_max *cm^2 KN[;z2i  
    "intensity (W/ cm&sup2;)", @y KX]!yA  
    y2: 0, 1.3 * N_Tm ]d-.Mw,'  
    frame dzBP<Xyh  
    hx BV`\6SM~  
    hy PCHspe9!y  
    Y)DX   
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 S,nELV~!  
      yscale = 2, U: Wet,  
      color = gray, @aZTx/  
      width = 3, (y 7X1Qc)  
      maxconnect = 1, !& >`  
      "N_dop (right scale)" &H]/'i-  
    )t"-#$,@  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 "GQ Q8rQ  
      color = red, @qan&?-Y  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 jT =|!,Pn  
      width = 3, *$W&jfW  
      "pump" kI)}7e  
    eF22 ~P  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 nAEyL+6U  
      color = blue, cO*g4VL"[  
      maxconnect = 1, sqtz^K ROM  
      width = 3, w|-3X  
      "signal" &.\7='$F  
    )\=xPfs  
    T1 $E][@Iv  
    ; ------------- +q '1P}e  
    diagram 5:                                  !输出图表5 (pd$?vRy  
    (+epRC  
    "TransitionCross-sections" {]<c6*gQ  
    NBY|U{.g  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) Ly+UY.v"  
    #%\0][Xf  
    x: 1450, 2050 5 tQz!M  
    "wavelength(nm)", @x mGj)Zrx>  
    y: 0, 0.6 O*~z@"\  
    "cross-sections(1e-24 m&sup2;)", @y %7)TiT4V  
    frame 2CO/K_Q  
    hx ]`|$nU}v  
    hy 31a,i2Q4  
    "mW'tm1+  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 )*;Tt @'y  
      color = red, >bh+!5Y0  
      width = 3, G XVx/) H  
      "absorption" *y?HaU  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 B#Ybdp ;  
      color = blue, @@Ybg6.+*  
      width = 3, ORs :S$Nt$  
      "emission" q>.7VN[ vE  
    # dWz,e3   
     
    分享到
    离线lileisgsz
    发帖
    14
    光币
    69
    光券
    0
    只看该作者 1楼 发表于: 2021-09-28
    感谢,视频上有点看不清楚