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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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    只看楼主 倒序阅读 楼主  发表于: 2020-05-28
    (* ~m;MM)_V  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, '2q xcco  
    pumped at 790 nm. Across-relaxation process allows for efficient O]r3?=  
    population of theupper laser level. RNrYT|  
    *)            !(*  *)注释语句 SYW= L  
    $rQFM[  
    diagram shown: 1,2,3,4,5  !指定输出图表 qer'V  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 G]NtX4'4  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 |% YzGgp7  
    ; 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 K7R])*B.~  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 oTV8rG  
    ; 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@S;>t{TD  
    cPBy(5^  
    include"Units.inc"         !读取“Units.inc”文件中内容 `J7Lecgo  
    7[.Q.3FL  
    include"Tm-silicate.inc"    !读取光谱数据 +}L3T"  
    _Ag/gu2-?  
    ; Basic fiberparameters:    !定义基本光纤参数 {'Qk>G s  
    L_f := 4 { fiberlength }      !光纤长度 Y" +1,?yH  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 W<hdb!bE  
    r_co := 6 um { coreradius }                !纤芯半径 `zOAltfd  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 a):Run  
    @p` CAB  
    ; Parameters of thechannels:                !定义光信道 SlJ/OcAf#  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm :AcN b  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 !m:PBl5  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W 2WECQl=r  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um a=T7w;\h  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 P(i2bbU  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 0N[DV]  
    ~JRu MP  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm 96E7hp !:  
    w_s := 7 um                          !信号光的半径 iF_r'+j  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 8cPf0p:  
    loss_s := 0                            !信号光寄生损耗为0 'e)ze^Jq  
    .q[sk  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 =28H^rK{  
    r ~!%w(N|M  
    ; 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 `L[32B9  
    calc \ui~n:aWJ  
      begin T2PFE4+Dp  
        global allow all;                   !声明全局变量 3R[J,go  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 e^Wv*OD'  
        add_ring(r_co, N_Tm); 6{r[Dq  
        def_ionsystem();              !光谱数据函数 1~u\]Zi=D  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 w58 QX/XG  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 c&?H8G)x  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 Ri6 br  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 <WKz,jh  
        finish_fiber();                                   `lh?Z3W  
      end; jL).B&  
    $>s@T(  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 bme#G{[)Y  
    show "Outputpowers:"                                   !输出字符串Output powers: eKti+n.  
    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) `ip69 IF2*  
    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) Ywk[VD+.  
    AS"|r  
    QAnfxt6  
    ; ------------- Nv]/L +i  
    diagram 1:                   !输出图表1 Uk ;.Hrt.  
    N6 (w<b  
    "Powers vs.Position"          !图表名称 qa`(,iN  
    aYCzb7  
    x: 0, L_f                      !命令x: 定义x坐标范围 'R5l =Wf  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 aNU%OeQA  
    y: 0, 15                      !命令y: 定义y坐标范围 $=SYssg7La  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 OiEaVPSI;  
    frame          !frame改变坐标系的设置 H0NyxG<  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) \~j(ui|  
    hx             !平行于x方向网格 ]@T `q R  
    hy              !平行于y方向网格 E1w XG  
    \gv x)S11  
    f: P(pump, x),    !命令f: 定义函数图;P(pump, x)函数是计算x位置处的泵浦光功率 J|8YB3K,  
      color = red,  !图形颜色 {#Cm> @')  
      width = 3,   !width线条宽度 &: 8&;vk  
      "pump"       !相应的文本字符串标签 `;2`H, G'  
    f: P(signal_fw, x),  !P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 oDI*\S>  
      color = blue,     (Sp~+#XnF  
      width = 3, rGL{g&_  
      "fw signal" vrx3O  
    f: P(signal_bw, x),   !P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 *n ?:)(  
      color = blue, MdjMTe s  
      style = fdashed, +%$V?y (  
      width = 3, ~mo `  
      "bw signal" p5t#d)  
    $ {eh52)`  
    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 +mv%z3"j;  
      yscale = 2,            !第二个y轴的缩放比例 h;[Nc j]  
      color = magenta, ToM*tXj  
      width = 3, [+7X&B  
      style = fdashed, )`7h,w J[1  
      "n2 (%, right scale)" Z}StA0F_  
    gq &85([  
    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 qiJ{X{lI  
      yscale = 2, Vo8"/]_h  
      color = red, >maz t=,  
      width = 3, o-Arfc3Q  
      style = fdashed, x"De 9SB  
      "n3 (%, right scale)" .1lc'gu5y  
    # TF  
    E zUjt)wF  
    ; ------------- $>m<+nai'  
    diagram 2:                    !输出图表2 X/749"23  
    Rx2|VD  
    "Variation ofthe Pump Power" {Vu:yh\<  
    niBpbsO  
    x: 0, 10 &>t1A5  
    "pump inputpower (W)", @x /omVM u  
    y: 0, 10 AOUO',v  
    y2: 0, 100 P .(X]+  
    frame ~;Kl/Z  
    hx aa]v7d  
    hy U %l{>*q  
    legpos 150, 150 3W0:0I  
    -3 Hq1  
    f: (set_P_in(pump, x);P_out(signal_fw)), !set_P_in(pump,x)改变泵浦信道功率;P_out(signal_fw)输出前向信号光 aQ\O ]gCE  
      step = 5, }$U6lh/Ep  
      color = blue, jX@9849@  
      width = 3, ~=*_I4,+r  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 4ebGAg?_  
      finish set_P_in(pump, P_pump_in) A'2:(m@{T  
    YgDasKFm'  
    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 8^T$6A[b  
      yscale = 2, MLX.MUS  
      step = 5, ;_*F [ }w  
      color = magenta, :wm^04<i   
      width = 3, uM#/  
      "population of level 2 (%, rightscale)", )cXc"aj@s  
      finish set_P_in(pump, P_pump_in) dx}!]_mlZ  
    d?.x./1[qi  
    f: (set_P_in(pump,x); 100 * n_av(3)),   !改变泵浦信号功率对能级3上激活粒子占比的影响 .jw)e!<\N  
      yscale = 2, ZS]e}]Zwp  
      step = 5, 1<5yG7SZ  
      color = red, i|Wn*~yFOO  
      width = 3, o 8U2vMH  
      "population of level 3 (%, rightscale)", cPSu!u}D  
      finish set_P_in(pump, P_pump_in) 5N/;'ySAE_  
    Q<qIlNE  
    HY:n{= o  
    ; ------------- Fy^\Uw  
    diagram 3:                         !输出图表3 6D<A@DR9J  
    ^xrR3m*d  
    "Variation ofthe Fiber Length" huIr*)r&p  
    Z(P#]jI]  
    x: 0.1, 5 OMU#Sx!6  
    "fiber length(m)", @x &\r%&IX/  
    y: 0, 10 3}Pa,u N  
    "opticalpowers (W)", @y HS7!O  
    frame o hCPNm  
    hx H Vy^^$  
    hy I( e>ff  
    cae}dHG2  
    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 [A47OR  
      step = 20,             [(mq8Nb  
      color = blue, |%}?*|-  
      width = 3, Z[VKB3Pb8  
      "signal output" zoU.\]#C  
    #0c`"2t&M  
    ;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 JQqDUd  
       step = 20, color = red, width = 3,"residual pump" "O`;zC  
    Hw Is7  
    ! set_L(L_f) {restore the original fiber length } ~A)$="  
    $O#h4L_  
    NKRXY~zHh  
    ; ------------- `}bUf epMJ  
    diagram 4:                                  !输出图表4 t j0vB]c  
    @tA.^k0`  
    "TransverseProfiles" KME #5=~  
    3^\y>  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) T7v8}_"-  
    k1<Py$9"  
    x: 0, 1.4 * r_co /um &zR}jD>  
    "radialposition (µm)", @x SV~xNzo~  
    y: 0, 1.2 * I_max *cm^2 $lQi0*s  
    "intensity (W/ cm&sup2;)", @y  <KpQu%2(  
    y2: 0, 1.3 * N_Tm Z7v~;JzC#  
    frame {D@y-K5  
    hx 7]Egu D4  
    hy > h9U~#G=  
    =Y BJ7.Y  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 ^$(|(N[;   
      yscale = 2, A28w/ =e7  
      color = gray, I.>LG  
      width = 3, (R, eWWF8~  
      maxconnect = 1, MG6Tk(3S  
      "N_dop (right scale)" =P!Vi6[gF~  
    ,ZSuo4  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 cA*%K[9  
      color = red, p4[W@JV  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 R8 KL4g-d  
      width = 3, !\m.&lk'^  
      "pump" ru&RL HFV  
    1li`+~L F  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 ;?rW`e2  
      color = blue, _YY)-H  
      maxconnect = 1, } 8svd#S+  
      width = 3, ,%C$~+xjM  
      "signal" sw&Qks? V  
    y|aWUX/a  
    %[0"[<1a  
    ; ------------- ^ey\ c1K  
    diagram 5:                                  !输出图表5 L \$zr,=C  
    L*_xu _F  
    "TransitionCross-sections" g N[r*:B  
    @EQ{lGpU3  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) Kq*^*vWC  
    [kXe)dMX8  
    x: 1450, 2050 ldxUq,p  
    "wavelength(nm)", @x V*?,r<(  
    y: 0, 0.6 X>CYKRtb  
    "cross-sections(1e-24 m&sup2;)", @y OJ 2M_q)e  
    frame {r"s.|n  
    hx  }N[sydL  
    hy {hl_/ aG  
    r}991O<  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 ex['{|a{  
      color = red, RsbrD8*AD  
      width = 3, L+u_153  
      "absorption" czp5MU_^  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 ZGrV? @o,6  
      color = blue, =}L[/RL  
      width = 3, P)H%dJ ^l  
      "emission" %H@fVWe2wT  
    :sn}D~  
     
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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