切换到宽版
  • 广告投放
  • 稿件投递
  • 繁體中文
    • 2020阅读
    • 1回复

    [原创]RP Fiber Power仿真设计掺铥光纤激光器代码详解 [复制链接]

    上一主题 下一主题
    离线小火龙果
     
    发帖
    916
    光币
    2113
    光券
    0
    只看楼主 倒序阅读 楼主  发表于: 2020-05-28
    (* tl,.fjZn  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, Ln')QN  
    pumped at 790 nm. Across-relaxation process allows for efficient &5fJPv &  
    population of theupper laser level. Xqg@ e:g  
    *)            !(*  *)注释语句 la0BiLzb]  
    XHK<AO^  
    diagram shown: 1,2,3,4,5  !指定输出图表 O`x;,6Vr  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 V@e?#iz  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 CrC^1K  
    ; 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 .h@rLorm>  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 jnKWZ/R  
    ; 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 Vd,jlt.t  
    =n5zM._S-  
    include"Units.inc"         !读取“Units.inc”文件中内容 ZRh~`yy  
     Ch&a/S}  
    include"Tm-silicate.inc"    !读取光谱数据 9YIM'q>`v  
    nBjqTud  
    ; Basic fiberparameters:    !定义基本光纤参数 vM*-D{  
    L_f := 4 { fiberlength }      !光纤长度 u]<,,  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 `<`` 8  
    r_co := 6 um { coreradius }                !纤芯半径 jVv0ST*z  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 X@ +{5%  
    [,t*Pfq'W8  
    ; Parameters of thechannels:                !定义光信道 #%a;"w  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm u)X=Qm)  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 R} eN@#"D  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W gf#{k2r  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um zT =Ho   
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 b#uL?f  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 PWaw]*dFmy  
    f2Klt6"9  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm Q i,j+xBp  
    w_s := 7 um                          !信号光的半径 /\ y?Y  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 2Nu=/tMN  
    loss_s := 0                            !信号光寄生损耗为0 ~("5y G  
    |{BIHgMh  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 8 ##-EN;ag  
    0Is,*Srr  
    ; 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 !O+) sbd<  
    calc lGV0 *Cji  
      begin 3c#BKHNC  
        global allow all;                   !声明全局变量 63q^ $I  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 UldXYtGe  
        add_ring(r_co, N_Tm); nW PF6V>  
        def_ionsystem();              !光谱数据函数 (Mo*^pVr  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 rXmn7;B}g  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 v~f HYa>  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 IpINH3odT  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 F3N?Nk/  
        finish_fiber();                                   nF54tR[  
      end; oI0M%/aM  
    nno}e/zqf  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 H7z,j}l  
    show "Outputpowers:"                                   !输出字符串Output powers: @oNH@a j%  
    show"pump:     ", P_out(pump):d3:"W"  !输出字符串pump:和计算值(格式为3个有效数字,单位W) Od)Uv1  
    show"signal:   ",P_out(signal_fw):d3:"W" !输出字符串signal:和计算值(格式为3个有效数字,单位W) #X%~B'  
    bx#>BK!  
    ?x$"+,  
    ; ------------- fV &KM*W*@  
    diagram 1:                   !输出图表1 oiF}?:7Q7  
    gy,ht3  
    "Powers vs.Position"          !图表名称 gQo]  
    O!m vJD  
    x: 0, L_f                      !命令x: 定义x坐标范围 j2Cks_$:  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 6%'.A]"  
    y: 0, 15                      !命令y: 定义y坐标范围 u8gS< \  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 W^0w  
    frame          !frame改变坐标系的设置 R}G4rO-J  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) o>).Cj  
    hx             !平行于x方向网格 H35S#+KX  
    hy              !平行于y方向网格 VvvRRP^q  
    *i\Qo  
    f: P(pump, x),    !命令f: 定义函数图;P(pump, x)函数是计算x位置处的泵浦光功率 B( ]M&  
      color = red,  !图形颜色 J4QXz[dG  
      width = 3,   !width线条宽度 -l`f)0{  
      "pump"       !相应的文本字符串标签 w zYzug  
    f: P(signal_fw, x),  !P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 33o9Yg|J~  
      color = blue,     di?K"Z>  
      width = 3, xO$lsZPG  
      "fw signal" `e(c^z#  
    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 t#Z-mv:(  
      color = blue, w&$`cD  
      style = fdashed, j.C`U(n}`  
      width = 3, pf%=h |  
      "bw signal" H(R1o~  
    6 )Hwt_b  
    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 aK&b{d  
      yscale = 2,            !第二个y轴的缩放比例 dq7x3v^"ZG  
      color = magenta, KX!T8+Y  
      width = 3, NMW#AZVd  
      style = fdashed, )` SE S."  
      "n2 (%, right scale)" iWei  
    &%8'8,.  
    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 4zASMu  
      yscale = 2, Wl;.%.]>  
      color = red, ]=.\-K  
      width = 3, ;o^eC!:/%  
      style = fdashed,  !;EjB*&  
      "n3 (%, right scale)" P<PJ)>  
    m`IC6*  
    @PN#p"KaT  
    ; ------------- R? ,an2  
    diagram 2:                    !输出图表2 s8QM ewU  
    Q~814P8]  
    "Variation ofthe Pump Power" +!k&Yje  
    nA?`BOe(  
    x: 0, 10 <:(6EKJAq}  
    "pump inputpower (W)", @x l\BVS)  
    y: 0, 10 G %N $C  
    y2: 0, 100 m$`RcwO  
    frame &J55P]7w  
    hx ZtV9&rd7  
    hy YsG%6&zEq  
    legpos 150, 150 :@kGAI  
    6,"IDH|ND  
    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`@ # *}A  
      step = 5, -mC0+}h  
      color = blue, h "Xg;(K  
      width = 3, 7q?9Tj3  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 nnCG g+l  
      finish set_P_in(pump, P_pump_in) $u7; TW6QD  
    `D>S;[~S7  
    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 UQ8M~x5$3%  
      yscale = 2, j;']cWe  
      step = 5, +)kb(  
      color = magenta, ^:6{22C{  
      width = 3, E_Im^a  
      "population of level 2 (%, rightscale)", D Gr> 2  
      finish set_P_in(pump, P_pump_in) bQE};wM,  
    0F@"b{&0  
    f: (set_P_in(pump,x); 100 * n_av(3)),   !改变泵浦信号功率对能级3上激活粒子占比的影响 ;E@G`=0St  
      yscale = 2, f _[<L  
      step = 5, I{ HN67O  
      color = red, ,pqGX3  
      width = 3, 7P" | J\  
      "population of level 3 (%, rightscale)", =fu :@+  
      finish set_P_in(pump, P_pump_in) wyp|qIS;  
    ;ToKJ6hN|*  
    +hvO^?4j  
    ; ------------- OH;b"]  
    diagram 3:                         !输出图表3 Nqw&< x+  
    TS/.`.gT  
    "Variation ofthe Fiber Length" RD\  
    y(Y!?X I  
    x: 0.1, 5 .zS?9MP  
    "fiber length(m)", @x k9)jjR*XxG  
    y: 0, 10 fYp'&Btb]x  
    "opticalpowers (W)", @y g$HwxA9Gp/  
    frame A~Y^VEn  
    hx D<|qaHB=  
    hy ;epV<{e$q4  
    aD=a,  
    f: (set_L(x);P_out(signal_fw)),     !改变光纤长度对信号光输出功率的影响 ElS9?Q+  
      step = 20,             Is]aj-#r  
      color = blue, !xP8# |1  
      width = 3, EG0WoUX|  
      "signal output" ~ (x;5{  
    HU%o6cw  
    ;f: (set_L(x);P_out(pump)),                     !改变光纤长度对泵浦信号输出功率的影响 r;>*_Oc7g  
       step = 20, color = red, width = 3,"residual pump" Z^V6K3GSz-  
    ?z}=B  
    ! set_L(L_f) {restore the original fiber length } ! vP[;6  
    GN-mrQo  
    x\F,SEj  
    ; ------------- VS9`{  
    diagram 4:                                  !输出图表4 vN|l\!~  
    SxdE?uCUS  
    "TransverseProfiles" " Om[~-31  
    hJwC~HG5  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) %FXfqF9  
    NLS%Sq  
    x: 0, 1.4 * r_co /um cs T2B[f9D  
    "radialposition (µm)", @x j;s"q]"x]  
    y: 0, 1.2 * I_max *cm^2 *:>"q ej  
    "intensity (W/ cm&sup2;)", @y qY~`8 x  
    y2: 0, 1.3 * N_Tm L!=4N!j  
    frame QA2borfy  
    hx ]?3un!o3o  
    hy '&.#  
    ._8KsuJG  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 4D[ '^q  
      yscale = 2, 4!+pc-}-  
      color = gray, [ j3&/  
      width = 3, %6L^2 X  
      maxconnect = 1, ~.A)bp  
      "N_dop (right scale)" &krwf ]|  
    /rq VB|M  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 ox:[f9.5  
      color = red, 6b%WHLUeT  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 j'%$XvI  
      width = 3, bhkUKxd  
      "pump" IB# @yH  
    zunV<2~(2}  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 LEW'G"+  
      color = blue, U>V&-kxtV  
      maxconnect = 1, #+$G=pS'v  
      width = 3, Jd5:{{ Lb  
      "signal" 8>X d2X  
    }-~X4u#   
    %^I88,$&L  
    ; ------------- JNkwEZhHyg  
    diagram 5:                                  !输出图表5 #ggf' QIHp  
    H2 $GIY  
    "TransitionCross-sections" 2zVJvn7  
    YyTSyP4  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) 9:`(Q3Ei  
    F%i^XA]a*  
    x: 1450, 2050 -8r  
    "wavelength(nm)", @x kGd<5vCs  
    y: 0, 0.6 jeGj<m  
    "cross-sections(1e-24 m&sup2;)", @y L]d-hs  
    frame 0PU8 #2pR  
    hx Nluv/?<  
    hy @y82L8G/  
    aYuD>rD  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 TF 'U  
      color = red, 4'-|UPhx  
      width = 3, ZQ_xDKqRV  
      "absorption" s<9RKfm  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 DXa=|T  
      color = blue, ]u4Hk?j~<  
      width = 3, ~er\~kp  
      "emission" ;9~6_@,@o  
    U Z|HJ8_  
     
    分享到
    离线lileisgsz
    发帖
    14
    光币
    69
    光券
    0
    只看该作者 1楼 发表于: 2021-09-28
    感谢,视频上有点看不清楚