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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
    (* z/zUb``  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, K cI'P(  
    pumped at 790 nm. Across-relaxation process allows for efficient mD @#,B7A  
    population of theupper laser level. (}1 gO  
    *)            !(*  *)注释语句 #;ez MRKM"  
    /7Z5_q_  
    diagram shown: 1,2,3,4,5  !指定输出图表 !qe ,&JL  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 hkOhY3K5  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 e@[9WnxYe  
    ; 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 R$qp3I  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 YU! SdT$  
    ; 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 \ci'Cbn\o  
    f4F13n_0X  
    include"Units.inc"         !读取“Units.inc”文件中内容 D=*3Xd  
    rXR=fj= 2  
    include"Tm-silicate.inc"    !读取光谱数据 {=n-S2%  
    VNKtJmt  
    ; Basic fiberparameters:    !定义基本光纤参数 HmxA2 ~C  
    L_f := 4 { fiberlength }      !光纤长度 0N02E  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 yhnhORSY;  
    r_co := 6 um { coreradius }                !纤芯半径 (80 Tbi~+  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 n^Co  
    <)01]lKH  
    ; Parameters of thechannels:                !定义光信道 -P"9KnsO  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm ]z5`!e)L  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 @ 63Uk2{W>  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W g *}M;"  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um U/2]ACGCN^  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 uLok0"}  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 AC*> f&  
    a "*DJ&  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm 09FHE/L  
    w_s := 7 um                          !信号光的半径 1+`Bli]dE  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 s^:8bFn9$  
    loss_s := 0                            !信号光寄生损耗为0 dg#w/}}m  
    <Z^P8nu  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 ')!+>b(P  
    \Km gFyF  
    ; 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 Rw8l"`  
    calc b|7c]l  
      begin "`Y.N$M`k  
        global allow all;                   !声明全局变量 d1MY>zq  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 >,JLYz|</  
        add_ring(r_co, N_Tm); '9O4$s1  
        def_ionsystem();              !光谱数据函数 R+}x#  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 D|zlC,J,  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 rof&O   
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 6|# +  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 WO=X*O ne  
        finish_fiber();                                   ~M@'=Q*~  
      end; $F> #1:=v<  
    z@WuKRsi  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 ldEZ_g^  
    show "Outputpowers:"                                   !输出字符串Output powers: :)/%*<vq,  
    show"pump:     ", P_out(pump):d3:"W"  !输出字符串pump:和计算值(格式为3个有效数字,单位W) |g o jb  
    show"signal:   ",P_out(signal_fw):d3:"W" !输出字符串signal:和计算值(格式为3个有效数字,单位W)  U~%V;*|4  
    879x(JII  
    5v1f?btc  
    ; ------------- ]#)1(ZE  
    diagram 1:                   !输出图表1 Yc5{M*w  
    \SA"DT  
    "Powers vs.Position"          !图表名称 P(H,_7 4  
    pVuJ4+`  
    x: 0, L_f                      !命令x: 定义x坐标范围 \2$-.npz  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 E: EXp7  
    y: 0, 15                      !命令y: 定义y坐标范围 wW5:p]<Y  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 !uIT5D  
    frame          !frame改变坐标系的设置 2|J>e(&akY  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) `gI`Cq4  
    hx             !平行于x方向网格 Rg4'9I%B  
    hy              !平行于y方向网格 M]\p9p(_  
    Q@M>DA!d^V  
    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 al{;]>W  
      color = red,  !图形颜色 =P* YwLb  
      width = 3,   !width线条宽度 \tL 9`RKpg  
      "pump"       !相应的文本字符串标签 m 6V:x/'=  
    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 z5~{WAAI  
      color = blue,     xLUgbql-  
      width = 3, )9(Mt _  
      "fw signal" M$|r8%z1  
    f: P(signal_bw, x),   !P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 ql Z()  
      color = blue, a' sa{>  
      style = fdashed, n veHLHvC7  
      width = 3, a(!_ 3i@  
      "bw signal" kpxWi=y  
    !8cS1(a  
    f: 100 * n(x, 2),    !n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 D{b*,F:&@)  
      yscale = 2,            !第二个y轴的缩放比例 (X!?#)fyn  
      color = magenta, :?!kZD!  
      width = 3, #bFJ6;g=V  
      style = fdashed, O' 5xPJ  
      "n2 (%, right scale)" A6?+$ Hr  
    B/P E{ /  
    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 FlWgTn>  
      yscale = 2, RbexsBq  
      color = red, 5C03)Go3Z  
      width = 3, :n1^Xw0q  
      style = fdashed, LyEM^d]  
      "n3 (%, right scale)" q7itznQSKc  
    zF+NS]XK  
    ]p,sve vo  
    ; ------------- C26vH#C  
    diagram 2:                    !输出图表2 <"Ox)XG3]W  
    `# N j8  
    "Variation ofthe Pump Power" mM6g-)cV  
    3<5E254N  
    x: 0, 10 @S69u s}  
    "pump inputpower (W)", @x O$'BJKj-4  
    y: 0, 10 ~Ibq,9i  
    y2: 0, 100 RyI(6TZl  
    frame X\?PnD`,  
    hx $:{r#mM  
    hy {'.[N79xP  
    legpos 150, 150 u@( z(P  
    i_ha^mq3  
    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 =dVPx<l5  
      step = 5, 6 WD(  
      color = blue, 7~gIOu  
      width = 3, zv1#PfO@)  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 '}\#bMeObg  
      finish set_P_in(pump, P_pump_in) Z *9Qeu-N:  
    +<\)b(  
    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 W%3<"'eP  
      yscale = 2, Ec44JD  
      step = 5, n^HKf^]  
      color = magenta, P;A9t#\  
      width = 3, QD<GXPu?N  
      "population of level 2 (%, rightscale)", Bh'_@PHP  
      finish set_P_in(pump, P_pump_in) 0^5*@vt  
    av}Giz  
    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  j|Q*L<J  
      yscale = 2, hJkP_( +J\  
      step = 5, v-(Ry<fT9  
      color = red, z0@{5e$#Y  
      width = 3, jH 4,-  
      "population of level 3 (%, rightscale)", OGDCC/  
      finish set_P_in(pump, P_pump_in) O{4G'CgN(  
    /(iq^  
    hKG)* Q  
    ; ------------- M_<? <>|  
    diagram 3:                         !输出图表3 b7thu5  
    w=dTa5  
    "Variation ofthe Fiber Length" !$q *~F"S  
    2X:OS/  
    x: 0.1, 5 *0EB{T1  
    "fiber length(m)", @x (%bqeI!ob  
    y: 0, 10 K2'Il[  
    "opticalpowers (W)", @y EAPLe{qw:q  
    frame P(n_eIF-f  
    hx f Fr[ &\[  
    hy [iT*L)R4  
    xsPY#  
    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  BZ'63  
      step = 20,             /o$C=fDF  
      color = blue, EFd9n  
      width = 3, T-;|E^  
      "signal output" '@jP$6T&  
    /Dmuvb|A  
    ;f: (set_L(x);P_out(pump)),                     !改变光纤长度对泵浦信号输出功率的影响 l r16*2.  
       step = 20, color = red, width = 3,"residual pump" d*M:P jG@  
    T>$S&U  
    ! set_L(L_f) {restore the original fiber length } rw9m+q  
    Rxl )[\A*  
    *$+:Cbe-F  
    ; ------------- )BJ Z{E*  
    diagram 4:                                  !输出图表4 V2v}F=  
    \dB)G<_  
    "TransverseProfiles" >[$j(k^  
    {.,-lFb\  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) ./Y5Vk#Rp\  
    I(bxCiRV  
    x: 0, 1.4 * r_co /um +\Zr\fOe|%  
    "radialposition (µm)", @x Q5kf-~Jx+  
    y: 0, 1.2 * I_max *cm^2 SU8vz/\%y  
    "intensity (W/ cm&sup2;)", @y rV5QKz6'  
    y2: 0, 1.3 * N_Tm BEfP#h=hr  
    frame eeOE\  
    hx eG\|E3Cb9  
    hy -45xa$vv  
    n'i~1pM,?  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 54^2=bp  
      yscale = 2, _e9S"``  
      color = gray, !_a@autj  
      width = 3, dPVl\<L1  
      maxconnect = 1, JSCZX:5  
      "N_dop (right scale)" V\2&?#GZ  
    3|Vh[iAa\  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 v 7g?  
      color = red, x2_?B[z  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 :m{;<LRV  
      width = 3, %F.^cd"  
      "pump" axpn*(yE  
    %]KOxaf_z  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 It@1!_tO2  
      color = blue, x&['g*[L0  
      maxconnect = 1,  4u.v7r  
      width = 3, ?h1r6?Sug{  
      "signal" 5Mb5t;4b  
    dyyGt }}5f  
    v ?OIK=Xm  
    ; ------------- "m'roU  
    diagram 5:                                  !输出图表5 SI~MTUqt  
    =Felo8+   
    "TransitionCross-sections" bS2)L4MQY  
    $z":E(oy  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) 3<:m;F*#  
    ww^!|VVa  
    x: 1450, 2050 {0?]weN*  
    "wavelength(nm)", @x NZaMF.  
    y: 0, 0.6 wq6.:8Or-]  
    "cross-sections(1e-24 m&sup2;)", @y %s(Ri6R&  
    frame %1jlXa  
    hx kbR!iPM-;  
    hy |GqKa  
    {CVn&|}J  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 RY\[[eG  
      color = red, V39`J*fI  
      width = 3, FKVf_Ncf%  
      "absorption" $,&3:ke1  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 e ab_"W   
      color = blue, !I UH 5  
      width = 3, {YT@$K]w,  
      "emission" \5ZDP3I  
    )V6<'>1WZ  
     
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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