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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
    (* S`s]zdUTP  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, ]+I9{%zB%8  
    pumped at 790 nm. Across-relaxation process allows for efficient PysDDU}v  
    population of theupper laser level. {!2K-7;  
    *)            !(*  *)注释语句 PNm@mC_fh  
    ai<qK3!O  
    diagram shown: 1,2,3,4,5  !指定输出图表 7i"b\{5  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 (_pw\zk>  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 kK75(x  
    ; 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 Tt: (l/1  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 &PC6C<<f  
    ; 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 sa.H,<;  
    :ts3_-cr  
    include"Units.inc"         !读取“Units.inc”文件中内容 <+*0{8?0  
    'Ix@<$~i3F  
    include"Tm-silicate.inc"    !读取光谱数据 mqZK1<r  
    &{j!!LL  
    ; Basic fiberparameters:    !定义基本光纤参数 %IO*(5f  
    L_f := 4 { fiberlength }      !光纤长度 v< P0f"GH  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 `KZV@t  
    r_co := 6 um { coreradius }                !纤芯半径 QT c{7&  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 ,b5'<3\  
    ;.4y@?B  
    ; Parameters of thechannels:                !定义光信道 iy~h|YK;  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm PMsb"=Ds  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 $`lWW6>P  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W *EuX7LEu_  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um 1m5l((d  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 cX9o'e:C  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 [63\2{_^v  
    1'f_C<.0  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm z|Y54o3  
    w_s := 7 um                          !信号光的半径 ;a?<7LIx  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 v? ."`,e  
    loss_s := 0                            !信号光寄生损耗为0 O|t>.<T?  
    f&CQn.K"  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 >5t! Xt  
    I0x)d`  
    ; Function for defining themodel:   !定义模型函数,一定要有calc命令,否则函数只会被定义,但不会被执行 v*V( hMy  
    calc @XJ7ff&  
      begin -*7i:mg  
        global allow all;                   !声明全局变量 BWxfY^,'&6  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 ~u%$ 9IhM  
        add_ring(r_co, N_Tm); az ZtuDfv  
        def_ionsystem();              !光谱数据函数 6:(s8e  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 1Le8W)J  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 mo^E8t.  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 AE:(:U\  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 Ue \A ,  
        finish_fiber();                                   <eXGtD  
      end; dU3A:uS^  
    ymm]+v5S.]  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出  0J+WCm`  
    show "Outputpowers:"                                   !输出字符串Output powers: CcUF)$kz  
    show"pump:     ", P_out(pump):d3:"W"  !输出字符串pump:和计算值(格式为3个有效数字,单位W) kn}^oRT  
    show"signal:   ",P_out(signal_fw):d3:"W" !输出字符串signal:和计算值(格式为3个有效数字,单位W) &pY '  
    Tw';;euw  
    <TVJ9l  
    ; ------------- }W^@mi  
    diagram 1:                   !输出图表1 (m'-1wX.  
    nFJW\B&(`  
    "Powers vs.Position"          !图表名称 rCF=m]1zxT  
    S*<Jy(:n  
    x: 0, L_f                      !命令x: 定义x坐标范围 (l%?YME  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 rf=l1GW  
    y: 0, 15                      !命令y: 定义y坐标范围 ZV--d'YiEm  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 PPl o0R  
    frame          !frame改变坐标系的设置 f$FO 1B)  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) "_&ZRcd*  
    hx             !平行于x方向网格 /W .s1N  
    hy              !平行于y方向网格 \d;)U4__!  
    Ug+ K:YUq  
    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 i[[.1MnS  
      color = red,  !图形颜色 oz=V|7,  
      width = 3,   !width线条宽度 }Hb0@ b_  
      "pump"       !相应的文本字符串标签 HWV A5E[`Y  
    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 O1~7#nJ*4[  
      color = blue,     by+xK~>  
      width = 3, *f 7rLM*  
      "fw signal" +ZbNSN=  
    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 sg=G<50i  
      color = blue, "*HM8\  
      style = fdashed, $e+4Kt ,  
      width = 3, Vz0(D  
      "bw signal" 0uD3a-J  
    FdE?uw  
    f: 100 * n(x, 2),    !n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 2FZ T  
      yscale = 2,            !第二个y轴的缩放比例 q6pHL  
      color = magenta, g$NUu  
      width = 3, ?5CE<[  
      style = fdashed, ?#GTD?3d  
      "n2 (%, right scale)" {X<g93  
    ]*P9=!x|M  
    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 1Du5Z9AM  
      yscale = 2, 0S :&wb  
      color = red, s7n7u7$j  
      width = 3, oUn+tu:  
      style = fdashed, T%oJmp?0  
      "n3 (%, right scale)" Sed 8Q-m  
    /RJ]MQ\*O  
    U\Y0v.11  
    ; ------------- I(AlRh  
    diagram 2:                    !输出图表2 :[+8(~| za  
    &[{sA;  
    "Variation ofthe Pump Power" $}vzBuWHwN  
    sCw>J#@2>  
    x: 0, 10 ;%d<Uk?  
    "pump inputpower (W)", @x JmDxsb^  
    y: 0, 10 7[P-;8)tq  
    y2: 0, 100 m#_Rv  
    frame <[n:Ij  
    hx  I!?Xq  
    hy 7_PY%4T"  
    legpos 150, 150 9QX!HQ|5y8  
    m-$}'mEO  
    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 %\-E R !b  
      step = 5, 1K#[Ef4  
      color = blue, dhA~Yu  
      width = 3, d+G%\qpzQ  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 s<"|'~<n  
      finish set_P_in(pump, P_pump_in) ;_SSR8uHv  
    baD063P;  
    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 { i6L/U.  
      yscale = 2, g_{N^wS  
      step = 5, }wRm ~  
      color = magenta, ]QHp?Ii1  
      width = 3, l'q%bi=f  
      "population of level 2 (%, rightscale)", SF-E>s!XL  
      finish set_P_in(pump, P_pump_in) yYGs] +  
    W/\VpD) ?;  
    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 P<Bx1H-z-  
      yscale = 2, 3QBzyJW f  
      step = 5, .xwskzJ3  
      color = red, 6QA`u*  
      width = 3, MvZa;B  
      "population of level 3 (%, rightscale)", "~r)_Ko  
      finish set_P_in(pump, P_pump_in) 'WhJ}Uo\  
    d'Bxi"K  
    i,^3aZwJ'  
    ; ------------- sM MtU@<x  
    diagram 3:                         !输出图表3 9vyf9QE;  
    LA_{[VWYp>  
    "Variation ofthe Fiber Length" E"VF BKB  
    wH!$TAZ:Yw  
    x: 0.1, 5 G\ F>*  
    "fiber length(m)", @x OFtf)cGE  
    y: 0, 10 z]rr Q=dAA  
    "opticalpowers (W)", @y r@C~_LgL)  
    frame d/yF}%0QI  
    hx ~Z/,o)  
    hy }R 16WY_'  
    Jn=;gtD- *  
    f: (set_L(x);P_out(signal_fw)),     !改变光纤长度对信号光输出功率的影响 1|4,jm$  
      step = 20,             v.<mrI#?  
      color = blue, @ :Zk,   
      width = 3, P #! N  
      "signal output" 5C1EdQ4S0  
    |?VJf3 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 siI%6Gn;  
       step = 20, color = red, width = 3,"residual pump" YhV<.2^k  
    f%.Ngf9  
    ! set_L(L_f) {restore the original fiber length } B2j1G JEO  
    M\4` S&  
    cg3}33Z;6  
    ; ------------- l[:Aq&[o3  
    diagram 4:                                  !输出图表4 $4xSI"+M%  
    Bz_'>6w  
    "TransverseProfiles" t}_ #N'`  
    0)Ephsw  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) MBg[hu%  
    7xeqs q  
    x: 0, 1.4 * r_co /um r~)fAb?  
    "radialposition (µm)", @x )pHlWi|h  
    y: 0, 1.2 * I_max *cm^2 z5$Q"Y.D  
    "intensity (W/ cm&sup2;)", @y 9r]|P}yuS  
    y2: 0, 1.3 * N_Tm 8-x-?7  
    frame \wA:58 -j  
    hx ErNYiYLi]  
    hy _|GbU1Hz  
    Oh$:qu7o0&  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 ?'P}ZC8P  
      yscale = 2, -sQ[f18  
      color = gray, &$/ #"lW,V  
      width = 3, ,J|,wNDU!K  
      maxconnect = 1, q5R| ^uf  
      "N_dop (right scale)" HCN/|z1Xq  
    o0C&ol_  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 KCTX2eNN&h  
      color = red, yV8J-YdsG  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 RN(I}]]a  
      width = 3, _aPAn|.  
      "pump" ;`#R9\C=h  
    A! bG2{r  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 )k,n}  
      color = blue, P'U2hCif  
      maxconnect = 1, X-HE9PT.  
      width = 3, pjFO0h_Y  
      "signal" kh0cJE\_^  
    EB*sd S  
    f zo'9  
    ; ------------- Os"('@jd>  
    diagram 5:                                  !输出图表5 ^-Od*DTL  
    DRQx5fgL  
    "TransitionCross-sections" h`|04Q  
    mF*x&^ie  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) tNT Sy =  
    m]2xOR_  
    x: 1450, 2050 <PpvVDy3  
    "wavelength(nm)", @x tz@MZs09  
    y: 0, 0.6 )J S6W  
    "cross-sections(1e-24 m&sup2;)", @y sFFQ]ST2p  
    frame R p&J!hlA  
    hx LQR2T5S/Q,  
    hy |GnTRahV.  
    SQ>i:D;  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 BNK]Os  
      color = red, &j 4pC$Dj  
      width = 3, O{LCHtN  
      "absorption" Ki;SONSV~|  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 E]`7_dG+T  
      color = blue, }S/i3$F0~  
      width = 3, dDPQDIx  
      "emission" |ri)-Bk ,  
    Z4VFfGCTL  
     
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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