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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
    (* 8MCSU'uQ  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, !*=+E%7  
    pumped at 790 nm. Across-relaxation process allows for efficient x5!lnN,#  
    population of theupper laser level. 6s&%~6J,  
    *)            !(*  *)注释语句 ziD+% -  
    (\$=+' hy  
    diagram shown: 1,2,3,4,5  !指定输出图表 = k>ygD_  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 4CioVQdj  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 /PtmJ2 [  
    ; 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 YN5p@b=FX  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 Kv6#WN~  
    ; 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 Z~ {[YsG  
    Xq.G vZS`  
    include"Units.inc"         !读取“Units.inc”文件中内容 PD@@4@^  
    /Wm3qlv  
    include"Tm-silicate.inc"    !读取光谱数据 RyN?Sn5)  
    !$.h[z^  
    ; Basic fiberparameters:    !定义基本光纤参数 kI#yW!  
    L_f := 4 { fiberlength }      !光纤长度 Z/= HQ8  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 6R%N jEW:  
    r_co := 6 um { coreradius }                !纤芯半径 atjrn:X  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 Ed&M  
    ^[-3qi  
    ; Parameters of thechannels:                !定义光信道 J l9w/T  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm /? HLEX  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 1N\-Ku  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W >,QW74o  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um NW@guhK.  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 @1G`d53N  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 # >L^W7^  
    BJ7m3[lz  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm FQ6{NMz,h  
    w_s := 7 um                          !信号光的半径 _.$g?E/(  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 d"JI4)%  
    loss_s := 0                            !信号光寄生损耗为0 b>"=kN/  
    XKT2u!Lx  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 <)$b=z  
    XveG#oyiU  
    ; 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 z2.ZxL"*  
    calc Zp*0%x!e  
      begin =f{YwtG  
        global allow all;                   !声明全局变量 gay6dj^  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 (xhV>hsA  
        add_ring(r_co, N_Tm); [ZkK)78}k  
        def_ionsystem();              !光谱数据函数 \Z%V)ZRi=  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 q(cSHHv+  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 aw8q}:  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道  ] cY  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 ![#>{Q4i  
        finish_fiber();                                   {QRrAi  
      end; $6p|}<u  
    u4p){|x7s  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 U:o(%dk  
    show "Outputpowers:"                                   !输出字符串Output powers: gzD NMM  
    show"pump:     ", P_out(pump):d3:"W"  !输出字符串pump:和计算值(格式为3个有效数字,单位W) 0"to]=  
    show"signal:   ",P_out(signal_fw):d3:"W" !输出字符串signal:和计算值(格式为3个有效数字,单位W) 2Sg,b8  
    -THU5AB  
    1P+Te,I  
    ; ------------- \@i4im@%xU  
    diagram 1:                   !输出图表1 X6g{qzHg_  
    q-)Ynp4'  
    "Powers vs.Position"          !图表名称 ;+h-o  
    K<Qy1y~[  
    x: 0, L_f                      !命令x: 定义x坐标范围 |&]04  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 8f0Ytfhw  
    y: 0, 15                      !命令y: 定义y坐标范围 G*lkVQ6?  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 d;9F2,k$w  
    frame          !frame改变坐标系的设置 gr y]!4Hy  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) ]aF!0Fln~  
    hx             !平行于x方向网格 m=uW:~  
    hy              !平行于y方向网格 /}=Bi-  
    d*{NAq'9X  
    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 XLNR%)l  
      color = red,  !图形颜色 +P. }<  
      width = 3,   !width线条宽度 EsR$H2"  
      "pump"       !相应的文本字符串标签 ?H2{R:  
    f: P(signal_fw, x),  !P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 &=d0'3k>  
      color = blue,     j\S}TaH0e  
      width = 3, PRE\ 2lLY  
      "fw signal" >^fkHbgNQ  
    f: P(signal_bw, x),   !P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 \h}a?T6  
      color = blue, 8QYM/yAM  
      style = fdashed, %[9d1F 3  
      width = 3, 56 raZC  
      "bw signal" Q7-d]xJ^  
    Z-D4~?Tv  
    f: 100 * n(x, 2),    !n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 2l9RU}  
      yscale = 2,            !第二个y轴的缩放比例 xYGB{g]  
      color = magenta, L93KsI  
      width = 3, ^5yFb=2  
      style = fdashed, oI6l`K$  
      "n2 (%, right scale)" }dt7n65  
    ;^K4kK&f  
    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 @a{1vT9b  
      yscale = 2, f*}H4H EO  
      color = red, (f*0Wp;  
      width = 3, b\l +S2  
      style = fdashed, a;2Lgv0/  
      "n3 (%, right scale)" J^R#  
    aF~ 0\XC  
    ;ESuj'*t  
    ; ------------- X_0Ta_u?T  
    diagram 2:                    !输出图表2 +%hA 6n  
    `T]1u4^E  
    "Variation ofthe Pump Power" # ~SQujgB  
    Nd"4*l;  
    x: 0, 10 P{-f./(JD  
    "pump inputpower (W)", @x DgQw9`W A  
    y: 0, 10 LS=HX~5C  
    y2: 0, 100 )Bq~1M 2  
    frame '<35XjW  
    hx UaQR0,#0y  
    hy -m.SN>V  
    legpos 150, 150 ]ctlK'.  
    AIR\>.~"i*  
    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 l$_Yl&!q$  
      step = 5, Y GZX}-  
      color = blue, W\tSXM-Hg  
      width = 3, 5+gSpg]i  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 JY|f zL  
      finish set_P_in(pump, P_pump_in) _Co*"hl>2  
    `zjEs8`'  
    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 R0n# FL^E  
      yscale = 2, BihXYux*  
      step = 5, HW)4#nLhh  
      color = magenta, %b H1We  
      width = 3, [a&|c%h  
      "population of level 2 (%, rightscale)", yX:*TK4  
      finish set_P_in(pump, P_pump_in) Fnnk }I}  
    pL {h1^O}  
    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 _IA@X. )?  
      yscale = 2, Wq+6`o  
      step = 5, b|cUKsL5  
      color = red, RE72%w(oM  
      width = 3, n6PXPc  
      "population of level 3 (%, rightscale)", J~6-}z   
      finish set_P_in(pump, P_pump_in) 4&Q.6HkL  
    tntQO!pM  
    uIG,2u,  
    ; ------------- Wgt[ACioN  
    diagram 3:                         !输出图表3 HbRDa  
    !z !R)6  
    "Variation ofthe Fiber Length" +w ;2kw  
    c&1:H1#  
    x: 0.1, 5 3J2j5N:g  
    "fiber length(m)", @x ]vJ] i <|b  
    y: 0, 10 z*cC2+R}=  
    "opticalpowers (W)", @y =kp-[7  
    frame hcvWf\4'#q  
    hx N{}XHA  
    hy `g2DN#q[0  
    X\r?g  
    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 eB`7C"Z  
      step = 20,             ohFUy}y  
      color = blue, ?h;Zdv>`xz  
      width = 3, ^6*2a(S&  
      "signal output" Vf67gux  
    _E[zYSo`  
    ;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 ZgN )sVJ  
       step = 20, color = red, width = 3,"residual pump" 2L#$WuM~^  
    pg\Ylk"T  
    ! set_L(L_f) {restore the original fiber length } 3x=f}SO&  
    zCvt"!}RRa  
    _H:mBk,,  
    ; ------------- xwZcO  
    diagram 4:                                  !输出图表4  vO 85h  
    Le&SN7I  
    "TransverseProfiles" S H"e x,=  
    5 ",@!1ju  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) *C~O[:6D  
    ,)u\G(N  
    x: 0, 1.4 * r_co /um > .L\>  
    "radialposition (µm)", @x PVGvjc  
    y: 0, 1.2 * I_max *cm^2 sx;7  
    "intensity (W/ cm&sup2;)", @y UN7>c0B  
    y2: 0, 1.3 * N_Tm IXp(Aeb  
    frame 1m*fkM#  
    hx :G/T{87H  
    hy n%o"n?e  
    $ e<&7  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 ?0>% a$`  
      yscale = 2, ;aJBx  
      color = gray, [b-wak})aD  
      width = 3, Nr\[|||%  
      maxconnect = 1, y^vB_[6l  
      "N_dop (right scale)" /Ulv/Thl  
    W0 n/B &C  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 f%Y'7~9bA  
      color = red, #&JhA2]q  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 wb@TYvDt  
      width = 3, f; <qGM.#|  
      "pump" W 7k\j&x  
    lkNaSz[  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 oMH-mG7:K  
      color = blue, bLrC_  
      maxconnect = 1, *Uvh;d{  
      width = 3, ')k n  
      "signal" fiuF!<#;6  
    N=e-"8  
    N/ 7Q(^  
    ; ------------- V) #vvnq  
    diagram 5:                                  !输出图表5 xh$1Rwa  
    C-Q]f  
    "TransitionCross-sections" >k gL N  
    M_-LI4>  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) !a"RHg:HO  
    Xr54/.{&@  
    x: 1450, 2050 )24c(  
    "wavelength(nm)", @x u{F^Ngy )  
    y: 0, 0.6 02U5N(s  
    "cross-sections(1e-24 m&sup2;)", @y VqzcTr]_  
    frame N# o" W  
    hx Q;m:o8Q5  
    hy y:6&P6`dx  
    [ D[&aA  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 }co v"o  
      color = red, iGG;  
      width = 3, CRK%%;=>  
      "absorption" 5,3Yt~\m  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 .G"UM>.}d  
      color = blue, 4CR.=  
      width = 3, ]JQ';%dne  
      "emission" %1E:rw@  
    Qqt<  
     
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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