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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 正序阅读 楼主  发表于: 2020-05-28
    (* q8ImrC.'^  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, htP|3B  
    pumped at 790 nm. Across-relaxation process allows for efficient oVCmI"'  
    population of theupper laser level. *V(Fn-6(  
    *)            !(*  *)注释语句 (Vg}Hh?p  
    (cv!Y=]  
    diagram shown: 1,2,3,4,5  !指定输出图表 yg]2erR  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 s=Q(C[%I  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 E2B>b[  
    ; 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 @/%{15s.  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 R.s|j=  
    ; 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 5.tvB  
    <Q<+4Y{R  
    include"Units.inc"         !读取“Units.inc”文件中内容 Ri>?KrQF%  
    $\AEWFB  
    include"Tm-silicate.inc"    !读取光谱数据 A>.2OC+  
    @tRMe6 4  
    ; Basic fiberparameters:    !定义基本光纤参数 #pdUJ2)yM  
    L_f := 4 { fiberlength }      !光纤长度 Ml>( tec  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 7m5Co>NkuK  
    r_co := 6 um { coreradius }                !纤芯半径 NN 0Q`r,8}  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 x O7IzqY  
    \.e4.[%[2-  
    ; Parameters of thechannels:                !定义光信道 #ZiT-  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm 7 gB{In0  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 VSOz.g>  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W q;AT>" =)  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um *Dr5O9Y  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 "Mmf6hu  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 VanB>|p6  
    #l1Qe`  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm ZEbLL4n  
    w_s := 7 um                          !信号光的半径 b~7drf  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 N<z`yV  
    loss_s := 0                            !信号光寄生损耗为0 @LLTB(@wR  
    &S74mV  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 A~lIa$U$b  
    klWYuStZ  
    ; Function for defining themodel:   !定义模型函数,一定要有calc命令,否则函数只会被定义,但不会被执行 %c^ m\ E  
    calc xk~Nmb}  
      begin -pTI?  
        global allow all;                   !声明全局变量 #WE]`zd  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 8 |h9sn;P  
        add_ring(r_co, N_Tm); ST8!i`Q$  
        def_ionsystem();              !光谱数据函数 :cp   
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 dYOF2si~%  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 g8pm2o@S  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 2Eh@e([PMs  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 :,*eX' fH  
        finish_fiber();                                   HW7FP]NH  
      end; a}.Y!O&  
    jOtX 60;  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 sM\&. <B  
    show "Outputpowers:"                                   !输出字符串Output powers: S-E++f9D~  
    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) ]jM^Z.mI+  
    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) 9]_GNk-D  
    nbvkP  
    W7G9Kx1Y  
    ; ------------- 2DMrMmLI  
    diagram 1:                   !输出图表1 J l7z|QS  
    & QZVq"  
    "Powers vs.Position"          !图表名称 @eQld\h'  
    w;`m- 9<Y  
    x: 0, L_f                      !命令x: 定义x坐标范围 hH+bt!aH  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 q/6UK =  
    y: 0, 15                      !命令y: 定义y坐标范围 @Y' I,e  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 fCEz-TMW  
    frame          !frame改变坐标系的设置 + Oobb-v  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) "xwM+AC  
    hx             !平行于x方向网格 ~oi_r8 K  
    hy              !平行于y方向网格 +*EKR  
    h$h]%y  
    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 a[O6YgO  
      color = red,  !图形颜色 g_D-(J`IK,  
      width = 3,   !width线条宽度 $@87?Ab  
      "pump"       !相应的文本字符串标签 -ID!pTvW  
    f: P(signal_fw, x),  !P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 dm^H5D/A  
      color = blue,     !7` [i  
      width = 3, I($,9|9F  
      "fw signal" $N.`)S<  
    f: P(signal_bw, x),   !P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 ujx-jIhT_  
      color = blue, { R*Y=Ie  
      style = fdashed, 3&J&^O  
      width = 3, ;mJkqbVol  
      "bw signal" )}|mDN&P  
    Q#rt<S1zW  
    f: 100 * n(x, 2),    !n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 Hhf72IX  
      yscale = 2,            !第二个y轴的缩放比例 BRtXf0~&p  
      color = magenta, Kx]> fHK  
      width = 3, dM|g`rr E  
      style = fdashed, 2YIF=YWO},  
      "n2 (%, right scale)" F X 1C e  
     <qn,  
    f: 100 * n(x, 3),          !n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比 mmN|F$;r  
      yscale = 2, tP]q4i  
      color = red, |a(Q4 e/,  
      width = 3, <P pYl  
      style = fdashed, OWV/kz5'H  
      "n3 (%, right scale)" 8?Wgawx  
    9}n,@@  
    h3t$>vs2F"  
    ; ------------- |LFUzq>j  
    diagram 2:                    !输出图表2  oWrE2U;  
    k.>6nho`TV  
    "Variation ofthe Pump Power" z+6QZQk  
    5vGioO  
    x: 0, 10 =L16hDk o  
    "pump inputpower (W)", @x C@)pmSQ  
    y: 0, 10 8|vld3;  
    y2: 0, 100 !c_u-&b)  
    frame y1Z1=U*!  
    hx '{^8_k\}B  
    hy #[,= 1Od(q  
    legpos 150, 150 :tlE`BIp  
    k1wr/G'H[  
    f: (set_P_in(pump, x);P_out(signal_fw)), !set_P_in(pump,x)改变泵浦信道功率;P_out(signal_fw)输出前向信号光 r:#Q9EA  
      step = 5, 3*2I$e!Jt  
      color = blue, x.G"D(  
      width = 3, 4[_L=zD  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 r+TK5|ke  
      finish set_P_in(pump, P_pump_in) e7's)C>/'  
    _y-B";Vmm  
    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 ~%KM3Vap  
      yscale = 2, EJ8I[(  
      step = 5, rV U:VL`2  
      color = magenta, \L %q[  
      width = 3, kyK'  
      "population of level 2 (%, rightscale)", OT%V{hD  
      finish set_P_in(pump, P_pump_in) ,$PFI(Whk  
    'oCm.~;_  
    f: (set_P_in(pump,x); 100 * n_av(3)),   !改变泵浦信号功率对能级3上激活粒子占比的影响 @jKDj]\  
      yscale = 2, A8mlw#`E8b  
      step = 5, RCCv>o  
      color = red, c G*(C  
      width = 3, 4D GY6PS  
      "population of level 3 (%, rightscale)", fo;6huz  
      finish set_P_in(pump, P_pump_in) t,1in4sN  
    zw< 4G[u  
    OuNj:  
    ; ------------- jF4csO=E  
    diagram 3:                         !输出图表3 |""=)-5N  
    >kZ6f4  
    "Variation ofthe Fiber Length" hXPocP  
    Y[h#hZ  
    x: 0.1, 5 J2'W =r_#  
    "fiber length(m)", @x htV#5SUx&  
    y: 0, 10 W?=$V>)  
    "opticalpowers (W)", @y FQ0KU b}0  
    frame PaxK^*  
    hx 0K/G&c?;=  
    hy b h*^{  
    @~s~/[  
    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 / =-6:L  
      step = 20,             U>in2u 9  
      color = blue, |G)Y8 #D  
      width = 3, 64h_1,U  
      "signal output" !e&rVoA  
    rAM *\=  
    ;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 }'DC Q  
       step = 20, color = red, width = 3,"residual pump" _Q)d+Fl  
    u0s'6=  
    ! set_L(L_f) {restore the original fiber length } @81-kdTx  
    #UBB lE#  
    G l_\Vy  
    ; ------------- B>sCP"/uV  
    diagram 4:                                  !输出图表4 W=UqX{-j)  
     oHOW5  
    "TransverseProfiles" B;SzuCW  
    DCt\E/  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) T<f2\q8Uo=  
    8~.iuFp  
    x: 0, 1.4 * r_co /um ]7v81G5E  
    "radialposition (µm)", @x Wx}M1&d/J  
    y: 0, 1.2 * I_max *cm^2 L{Q4=p,A  
    "intensity (W/ cm&sup2;)", @y O%fUm0O d  
    y2: 0, 1.3 * N_Tm l6V%"Lo/)  
    frame ] xb]8]  
    hx vc )9Re$  
    hy K*HCFqr U"  
    iD.0J/  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 ax<g0=^R  
      yscale = 2, *e%Dg{_  
      color = gray, 3T" #T&eL  
      width = 3, 1$);V,DK!  
      maxconnect = 1, 'BqrJfv  
      "N_dop (right scale)" aF,j J}On  
    jo<>Hc{g>  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 `<S/?I8  
      color = red, 9!5b2!JL  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 -E6Jf$  
      width = 3, N )'8o}E  
      "pump" ?hxK/%)  
    6 M*b6  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 CKx\V+\O  
      color = blue, :-$cdZ3E  
      maxconnect = 1, /z/hUa  
      width = 3, '&N: S-  
      "signal" Km[]^;6  
    ? UxG/]",  
    GEhdk]<a7  
    ; ------------- )\um "l*\c  
    diagram 5:                                  !输出图表5 \k|_&hG  
    h~,x7]w6  
    "TransitionCross-sections" B1x'5S;Bq  
    Z"l`e0 {  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) Z~duJsH  
    $|>6z_3%  
    x: 1450, 2050 UVc>i9,0  
    "wavelength(nm)", @x Qe7" Z  
    y: 0, 0.6 *d^9,GGn-  
    "cross-sections(1e-24 m&sup2;)", @y !8wZw68"  
    frame imo'(j7  
    hx X=fPGyhZ  
    hy `DI{wqV9  
    )3k)2XF  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 JOA%Y;`<#  
      color = red, \%w7D6dEZ  
      width = 3, @uQ%o%Ru6  
      "absorption" w;lx:j!Vp$  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 + #|'|}j  
      color = blue, on]\J  
      width = 3, &Tf=~6  
      "emission" L@C >-F|p  
    N5:D8oWWXR  
     
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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