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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
    (* p3{x<AO/  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, (X0`1s  
    pumped at 790 nm. Across-relaxation process allows for efficient d%S=$}o  
    population of theupper laser level. <=#lRZW[z  
    *)            !(*  *)注释语句 8  /5sv  
    +"TI_tK, S  
    diagram shown: 1,2,3,4,5  !指定输出图表 qr7 X-[&  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 z (c@(UD-_  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 &?}kL= h  
    ; 3:"Variation of the Fiber Length"!信号输出功率vs 光纤长度的变化,仿真最佳光纤长度 3(cU)  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 b EoB;]  
    ; 5:"Transition Cross-sections"    !不同波长的跃迁横截面,横坐标波长,纵坐标为横截面 `%KpTh  
    bS_y_ 9K  
    include"Units.inc"         !读取“Units.inc”文件中内容 :|*Gnu  
    c,+L +  
    include"Tm-silicate.inc"    !读取光谱数据 |G|*  
    }wa}hIqx  
    ; Basic fiberparameters:    !定义基本光纤参数 V:nMo2'hb  
    L_f := 4 { fiberlength }      !光纤长度 GhSL%y  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注  muK'h`  
    r_co := 6 um { coreradius }                !纤芯半径 U)O?| VN^o  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 5bu[}mJ  
    /k4^&  
    ; Parameters of thechannels:                !定义光信道 9~LpO>-  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm `@VM<av  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 4*@G&v?n  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W BXQ\A~P\  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um L:|X/c9r[  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 h(+m<J  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 c4!c_a2pS  
    mq|A8>g  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm &hSnB~hi  
    w_s := 7 um                          !信号光的半径 {<''OwQF~+  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 3D 4]yR5  
    loss_s := 0                            !信号光寄生损耗为0 tEpIyC  
    k;"R y8[k  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 =8$(i[;6w  
    7 K;'7  
    ; 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 L@gQ L  
    calc c<JM1  
      begin wHB Hkz  
        global allow all;                   !声明全局变量 P;HVLflu  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 5WtQwN~  
        add_ring(r_co, N_Tm); i/C -{+}U  
        def_ionsystem();              !光谱数据函数 l`~a}y"n  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 CYTuj>Ww  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 Z=e[ !c  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 Qwp\)jVi  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 MHpL$g=5_  
        finish_fiber();                                   gLXvw]  
      end; FthXFxwx$  
    q>D4ma^  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 Y1yvI  
    show "Outputpowers:"                                   !输出字符串Output powers: &2P:A  
    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) Hm.&f2|(  
    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) "2vNkO##  
    )DklOEO  
    .NNcc4+  
    ; ------------- hX'z]Am<  
    diagram 1:                   !输出图表1 n!CP_  
    4cErk)F4  
    "Powers vs.Position"          !图表名称 c|R3,<Q]  
    ;S{Ld1;  
    x: 0, L_f                      !命令x: 定义x坐标范围 K 8yyxJ  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 0%q ctZy  
    y: 0, 15                      !命令y: 定义y坐标范围 k Nf!j  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 :Z*02JwK  
    frame          !frame改变坐标系的设置 NXWIE4T>*^  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) YQB]t=Ha  
    hx             !平行于x方向网格 w ufKb.4`  
    hy              !平行于y方向网格 ,,wyydG  
    1=/MT#d^?  
    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 9m#H24{V'  
      color = red,  !图形颜色 69<rsp(p  
      width = 3,   !width线条宽度 pT_e;,KW U  
      "pump"       !相应的文本字符串标签 ![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 k DceBs s  
      color = blue,     "PDSqYA  
      width = 3, )z4kP09  
      "fw signal" KH@) +Rj  
    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 yoA*\V  
      color = blue, 3' :[i2[  
      style = fdashed, qu#@F\gX  
      width = 3, S#0|#Z5qD  
      "bw signal" ^RF mRn  
    u {E^<fW]  
    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 e G*s1uQl  
      yscale = 2,            !第二个y轴的缩放比例 jQK2<-HZ3  
      color = magenta, t+4%,n f_1  
      width = 3, #`6OC)1J  
      style = fdashed, 1 Q0Yer  
      "n2 (%, right scale)" /O(;~1B  
    31o7R &v  
    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 h.s<0.  
      yscale = 2, 5x1jLPl'  
      color = red, \A~I>x  
      width = 3, BB73' W8y  
      style = fdashed, D !D%.  
      "n3 (%, right scale)" ~_l: b  
    WE Svkm;  
    m?R+Z6c[  
    ; ------------- EK-bvZ  
    diagram 2:                    !输出图表2 t&Y^W <  
    |)P;%Fy9  
    "Variation ofthe Pump Power" n.H`1@  
    $Bwvw)(%  
    x: 0, 10 yn ?U7`V  
    "pump inputpower (W)", @x ~E:/oV:4 >  
    y: 0, 10 ?H7p6m u  
    y2: 0, 100 5-QvQ&eH.  
    frame 3 z/O`z  
    hx <&m  
    hy j"$b%|  
    legpos 150, 150 I}Gl*@K&O  
    Nno={i1jk  
    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 *}WqYqOow  
      step = 5, dU04/]modD  
      color = blue, '?!<I  
      width = 3, nrD=[kc!w  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 iNrmhiql  
      finish set_P_in(pump, P_pump_in) ewff(e9  
    fS$Yl~-m?  
    f: (set_P_in(pump,x); 100 * n_av(2)),   !改变泵浦信号功率对能级2上激活粒子占比的影响 pcxl2I  
      yscale = 2, O [ ;6E  
      step = 5, 1.OXkgh  
      color = magenta, o _,$`nEJ  
      width = 3, ABYW1K=  
      "population of level 2 (%, rightscale)", N@`9 ~JS  
      finish set_P_in(pump, P_pump_in) LF,c-Cv!jL  
    ~(doy@0M  
    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 bA9dbe  
      yscale = 2, Ei(`gp  
      step = 5, '~6CGqU*  
      color = red, >a] s  
      width = 3, MS^hsUj}  
      "population of level 3 (%, rightscale)", PT*@#:MA  
      finish set_P_in(pump, P_pump_in) O7_NXfh|  
    w\Eve:  
    E6IL,Iq9  
    ; ------------- ewlc ^`  
    diagram 3:                         !输出图表3 BO cEL%+  
    2!& ;ZcT,  
    "Variation ofthe Fiber Length" 7&U+f:-w  
    KqIe8bi^G  
    x: 0.1, 5 Vh-h{  
    "fiber length(m)", @x 5suSR;8  
    y: 0, 10 -`<N,  
    "opticalpowers (W)", @y V\lF:3C  
    frame 3G0\i!*t  
    hx !{=%l+^.  
    hy ,T>2zSk  
    HOI`F3#XI  
    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 5UD;Z V%  
      step = 20,             = |zyi|  
      color = blue, $R}iL  
      width = 3, 9Yne=R/]  
      "signal output" 7.'j~hJL  
    ) W7H{#  
    ;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 wx7>0[zE  
       step = 20, color = red, width = 3,"residual pump" UVRV7^eTe  
    X~VZ61vNu  
    ! set_L(L_f) {restore the original fiber length } R_&V.\e_  
    p+1B6j  
    ?fwr:aP~  
    ; ------------- \nt'I;f  
    diagram 4:                                  !输出图表4 RR {9  
    lk'jBl%  
    "TransverseProfiles" ^g"6p#S=n  
    UE](`|4H  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) xGQ:7g+qu  
    $w}aX0dK&  
    x: 0, 1.4 * r_co /um ;{u#~d}  
    "radialposition (µm)", @x w0OK. fj  
    y: 0, 1.2 * I_max *cm^2 e/l?|+m 6  
    "intensity (W/ cm&sup2;)", @y iFT3fP'> 5  
    y2: 0, 1.3 * N_Tm 5%$kAJZC-  
    frame c=mFYsSv  
    hx C /VXyl@o  
    hy K_Gf\x  
    R5~m"bE  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 {_D'\i(Y_  
      yscale = 2, |-?b)yuAz  
      color = gray, _$x *CP0(  
      width = 3, Yhdt8[ 2  
      maxconnect = 1, sMo%Ayes  
      "N_dop (right scale)" RLr-xg$K-t  
    )7TTRL  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 #_5+kBA+>'  
      color = red, 'Pn`V{a  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 FiH!) 6T  
      width = 3, g[Y$SgJ  
      "pump" cA^7}}?e  
    7E]l=Z`x  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 5rhdm?Ls0  
      color = blue, L 3Iz]D3s  
      maxconnect = 1, s;)tLJ!  
      width = 3, t38T0Ao  
      "signal" N($]))~3&  
    aesFv)5DK  
    {uG_)GFr0  
    ; ------------- n*|-"'j  
    diagram 5:                                  !输出图表5 W12K93tO  
    rGO 3  
    "TransitionCross-sections" 2Ki/K(  
    r#}%sof  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) m/h0J03'T  
    ~-zC8._w3r  
    x: 1450, 2050 ZaV@}=Rd8  
    "wavelength(nm)", @x G 3x1w/L  
    y: 0, 0.6 ]+S QS^4  
    "cross-sections(1e-24 m&sup2;)", @y <;K/Yv'{r  
    frame ]YKWa"  
    hx `_ L|I s=n  
    hy !Hg#c!eOg  
    p*,mwKN:  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 8hY)r~!b'  
      color = red, {,X(fJ  
      width = 3, 'LI)6;Yc  
      "absorption" gr7_oJ:R  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 .YlM'E*X  
      color = blue, .42OSV  
      width = 3, HBu>BSv:  
      "emission" )}8%Gs4C  
    `VbG%y&I  
     
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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