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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
    (* ~EXCYUp4v  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, mSZg;7DE3*  
    pumped at 790 nm. Across-relaxation process allows for efficient ?P>4H0@I+  
    population of theupper laser level. 2P@6Qe ?  
    *)            !(*  *)注释语句 {TJBB/B1  
    }-XZ1qr  
    diagram shown: 1,2,3,4,5  !指定输出图表 ,1~zMzw^  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 $ #GuV'  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 vRf$#fBEQ  
    ; 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 Yjd/  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 n$7*L9)(C  
    ; 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 I} +up,B]o  
    Lz-|M?(  
    include"Units.inc"         !读取“Units.inc”文件中内容 $ywROa]  
    ;C:|m7|  
    include"Tm-silicate.inc"    !读取光谱数据 6d/v%-3  
    r#& JfAo  
    ; Basic fiberparameters:    !定义基本光纤参数 1n7'\esC*  
    L_f := 4 { fiberlength }      !光纤长度 5ZH3}B^L$  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 GJ2ZK=/  
    r_co := 6 um { coreradius }                !纤芯半径 P{_%p<:V  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 ~%M*@ fm  
    (aSuxl.Dq  
    ; Parameters of thechannels:                !定义光信道 &N6[*7  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm Dr=$}Y  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 wpi$-i`  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W _FcTY5."S  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um (3!6nQj-t  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 e<a*@ P,  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 jrz.n 4Y`  
    W(4$.uZ)  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm JZ5";*,  
    w_s := 7 um                          !信号光的半径 G{>PYLxOb  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 xVX:kDX  
    loss_s := 0                            !信号光寄生损耗为0 B)L0hi  
    J-uQF|   
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 $_TS]~y4}  
    `#8kJt  
    ; 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 IhZn  
    calc nHq4f&(H  
      begin BOcD?rrZ0  
        global allow all;                   !声明全局变量 %l a1-r~  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 r@vt.t0#  
        add_ring(r_co, N_Tm); j&Xx{ 4v  
        def_ionsystem();              !光谱数据函数 %0/qb0N&  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 T{m) = (q  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 )X|)X,~+-  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 $@] xi  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 yZgWFf.X  
        finish_fiber();                                   ']I!1>v$[  
      end; mf{M-(6'  
    }S?"mg& V  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 Tbv w?3  
    show "Outputpowers:"                                   !输出字符串Output powers: chKEGosbF  
    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) |mRlP5  
    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) AJ& j|/  
    f8N* [by  
    (U# Oj"  
    ; ------------- 8-k`"QI=  
    diagram 1:                   !输出图表1 5G(dvM-n  
    )1Y?S;  
    "Powers vs.Position"          !图表名称 h!|Uj  
    ;fW~Gb?"  
    x: 0, L_f                      !命令x: 定义x坐标范围 {7]maOg>7J  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 yFb"2  
    y: 0, 15                      !命令y: 定义y坐标范围 hwL`9.w  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 |W=-/~X  
    frame          !frame改变坐标系的设置 \O;/wf0Hg  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) `sso Wn4  
    hx             !平行于x方向网格 /d:hW4}<}.  
    hy              !平行于y方向网格 c(2?./\|  
    #Ktk["6  
    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 T`Up%5Dk  
      color = red,  !图形颜色 s2|.LmC3|B  
      width = 3,   !width线条宽度 ' 7oCWHq[  
      "pump"       !相应的文本字符串标签 :3D6OBkB  
    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 V]+y*b.60  
      color = blue,     8IxIW0  
      width = 3, z~~pH9=c2  
      "fw signal" "9QZX[J|*  
    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 w{xa@Q]t-  
      color = blue, 8M,@Mb n  
      style = fdashed, 0,0Z!-Y  
      width = 3, UQ;2g\([  
      "bw signal" fpC":EX@r  
    kp<Au)u  
    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 ;|?_C8  
      yscale = 2,            !第二个y轴的缩放比例 3F!)7  
      color = magenta, h%W,O,K/  
      width = 3, D]}~`SO  
      style = fdashed, fmQif]J;;  
      "n2 (%, right scale)" )8#-IXxp  
    _a& Z$2O  
    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 sZr \mQ~  
      yscale = 2, X`WS&!C<  
      color = red, |? fAe {*  
      width = 3, V59!}kel1%  
      style = fdashed, $t}W,?   
      "n3 (%, right scale)" e Ru5/y~  
    7#G!es  
    glU9A39qx?  
    ; ------------- O#18a,o@  
    diagram 2:                    !输出图表2 +}?%w|8||s  
    (GL'm[V  
    "Variation ofthe Pump Power" KGo^>us  
    +6jGU '}[  
    x: 0, 10 s[h;9 I1w  
    "pump inputpower (W)", @x <X4f2z{T{@  
    y: 0, 10 K39I j_3  
    y2: 0, 100 Z]TQ+9t  
    frame |;)_-=L0P  
    hx - ry  
    hy  WTl0}wi  
    legpos 150, 150 JBJ?|}5k4c  
    e],(d7Jo  
    f: (set_P_in(pump, x);P_out(signal_fw)), !set_P_in(pump,x)改变泵浦信道功率;P_out(signal_fw)输出前向信号光 MmvOyK NZF  
      step = 5, Vh?vD:|  
      color = blue, =1R 2`H\  
      width = 3, HDzeotD  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 wA/!A$v(  
      finish set_P_in(pump, P_pump_in) m,q)lbRl  
    CVkJMH_  
    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 4xalm  
      yscale = 2, L / WRVc6  
      step = 5, MoEh25U.  
      color = magenta, 8$47Y2r@  
      width = 3, L[*cbjt[  
      "population of level 2 (%, rightscale)", $yj*n;  
      finish set_P_in(pump, P_pump_in) ]:?S}DRG  
    4 Sk@ v  
    f: (set_P_in(pump,x); 100 * n_av(3)),   !改变泵浦信号功率对能级3上激活粒子占比的影响 :R:@V#Y  
      yscale = 2, is^R8a  
      step = 5, b`S9#`  
      color = red, hslT49m>  
      width = 3, t5K#nRd Z:  
      "population of level 3 (%, rightscale)", +`Nu0y!rj  
      finish set_P_in(pump, P_pump_in) Z"w}`&TC$^  
    (,+#H]L  
    |P|2E~[r  
    ; ------------- t!J>853  
    diagram 3:                         !输出图表3 Fec4#}|  
    <_eEpG}9  
    "Variation ofthe Fiber Length" S\t!7Xs%*U  
    <'sm($.2  
    x: 0.1, 5 W  wj+\  
    "fiber length(m)", @x 1'TS!/ll];  
    y: 0, 10 b 1Wz  
    "opticalpowers (W)", @y UCj+V@{  
    frame R N@)nc_  
    hx `}sFT:1&  
    hy b.[9Adi >  
    _]Ob)RUVH  
    f: (set_L(x);P_out(signal_fw)),     !改变光纤长度对信号光输出功率的影响 G^K;+&T  
      step = 20,             xnWezO_  
      color = blue, eUCBQK  
      width = 3, pMViq0  
      "signal output" '4u/g  
    _G<Wq`0w)  
    ;f: (set_L(x);P_out(pump)),                     !改变光纤长度对泵浦信号输出功率的影响 l"X,[  
       step = 20, color = red, width = 3,"residual pump" z+wegF  
    a+k3wzJ  
    ! set_L(L_f) {restore the original fiber length } Y|hd!C-x  
    tIod=a)  
    ^ . A  
    ; ------------- Da6l =M  
    diagram 4:                                  !输出图表4 ~/aCzx~  
    KY%qzq,n  
    "TransverseProfiles" MuzQ z.C  
    f61vE  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) gC kR$.-E  
    ~Cynw(  
    x: 0, 1.4 * r_co /um XA.1Y)  
    "radialposition (µm)", @x FrLv%tK|  
    y: 0, 1.2 * I_max *cm^2 'BgR01w J  
    "intensity (W/ cm&sup2;)", @y ""N~##)8  
    y2: 0, 1.3 * N_Tm KX cRm)  
    frame x*TJYST  
    hx !lsa5w{  
    hy 4u41M,nJQd  
    N,VI55J:y>  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 -Ks)1w>l  
      yscale = 2, upeioC q  
      color = gray, +s`cXTlFrk  
      width = 3, Rm$(X5x>o  
      maxconnect = 1, 5K$<Ad4$b  
      "N_dop (right scale)" p g_H'0R  
    r_tt~|s,>  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 xkSVD6Km  
      color = red, jMS>B)'TO  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 K g.O2F77  
      width = 3, 7'{Vh{.  
      "pump" #NL'r99D/o  
    TPKD'@:x  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 uocFOlU0n  
      color = blue, KV6D0~  
      maxconnect = 1, #(+V&< K  
      width = 3, V;J3lV<  
      "signal" W.D>$R2  
    -3b_}by  
    o^owv(  
    ; ------------- wHx_lsY;   
    diagram 5:                                  !输出图表5 i;|I; 5tC  
    q3K}2g  
    "TransitionCross-sections" >+!Ef  
    ,TB$D]u8  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) -'*<;]P+.  
    UL%a^' hR  
    x: 1450, 2050 cb{"1z  
    "wavelength(nm)", @x [!uVo>Q4  
    y: 0, 0.6 7;Q4k"h  
    "cross-sections(1e-24 m&sup2;)", @y @" umY-1f  
    frame Q+QD ,  
    hx Y5"HKW^  
    hy a=9QwEZ  
    %S$$*|_G  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 N:+d=G`x  
      color = red, Wfc~"GQq4  
      width = 3, ?FR-a Xx  
      "absorption" 2vsV :LS.  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 ;, \!&o6  
      color = blue, 42}8es.aa  
      width = 3, ~0?B  
      "emission" [U"/A1p  
    0plX"NU  
     
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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