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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
    (* (mq 7{ ;7y  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, O.7Q* ^_  
    pumped at 790 nm. Across-relaxation process allows for efficient 5pNbO[  
    population of theupper laser level. "y R56`=  
    *)            !(*  *)注释语句 5t6!K?}  
    )|>LSKT El  
    diagram shown: 1,2,3,4,5  !指定输出图表 :tP:X+?O  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 '}a[9v76  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 ?!H <V@a  
    ; 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 S>~QuCMY  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 ZyE2=w7n  
    ; 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 Fs q=u-= :  
    8i!~w 7z  
    include"Units.inc"         !读取“Units.inc”文件中内容 H \ $04vkR  
    Jhbkp?Zli  
    include"Tm-silicate.inc"    !读取光谱数据 ayfZ>x{s*  
    'L#qR)t  
    ; Basic fiberparameters:    !定义基本光纤参数 ?>lvV+3^`  
    L_f := 4 { fiberlength }      !光纤长度 Wc4K?3 ZM  
    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+Lig  
    r_co := 6 um { coreradius }                !纤芯半径 owA3>E5t&  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 jEBZ"Jvb  
    MRvtuE|g  
    ; Parameters of thechannels:                !定义光信道 {;4AdZk  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm ${n=1-SMU  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 l" y==y  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W wAE ,mw  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um Ya] qo]  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 l[]K5?AS>-  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 mq$mB1$3u  
    3 wVN:g7  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm n50XGv  
    w_s := 7 um                          !信号光的半径 KK-9[S-  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 ZVotIQ/Q'  
    loss_s := 0                            !信号光寄生损耗为0 6T 2jVNg  
    &_ er_V~  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 WXj}gL`  
    [0 7N<<  
    ; Function for defining themodel:   !定义模型函数,一定要有calc命令,否则函数只会被定义,但不会被执行 SJ1 1LF3)  
    calc |Ia3bV W  
      begin 4VE7%.z+  
        global allow all;                   !声明全局变量 -d\O{{%>.z  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 w5"C<5^  
        add_ring(r_co, N_Tm); wC@5[e$  
        def_ionsystem();              !光谱数据函数 T*>n a8W  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 Sc "J5^  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 ToIvyeFr  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 BsVUEF,N  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 uV<I!jyI  
        finish_fiber();                                   D%cWw0Oq  
      end; m3]|I(]`Xe  
    U6qv8*~  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 c8mcJAc  
    show "Outputpowers:"                                   !输出字符串Output powers: ]X +3"  
    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) juuBLv  
    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) 0N.tPF}  
    E"iH$NN  
    "HFS5Bj'  
    ; ------------- 1E!0N`E  
    diagram 1:                   !输出图表1 xKKL4ws  
    S1^u/$*6  
    "Powers vs.Position"          !图表名称 dwks"5l  
    O4FW/)gq  
    x: 0, L_f                      !命令x: 定义x坐标范围 5,>1rd<B  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 )F 6#n&2  
    y: 0, 15                      !命令y: 定义y坐标范围 v=?U{{xQ  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 j.4oYxK!s/  
    frame          !frame改变坐标系的设置 #V[ ?puE@  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) -CW&!oW  
    hx             !平行于x方向网格 Lys4l$J]  
    hy              !平行于y方向网格 k;:v~7VF  
    "Iu[)O%  
    f: P(pump, x),    !命令f: 定义函数图;P(pump, x)函数是计算x位置处的泵浦光功率 p8y_uN QE  
      color = red,  !图形颜色 +uW$/_Y$  
      width = 3,   !width线条宽度 x Yr-,$/  
      "pump"       !相应的文本字符串标签 I ,Q"<? &  
    f: P(signal_fw, x),  !P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 ,LZ6Wu$P  
      color = blue,     jJl6H~ "q  
      width = 3, O!='U!X@P  
      "fw signal" |jm|/{lc  
    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 { 'Hi_b3  
      color = blue, 35Nwx<  
      style = fdashed, sd\>|N?'  
      width = 3, u8 14ZN}  
      "bw signal" R3F>"(P@tS  
    a_I!2w<I  
    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  Q^/5hA  
      yscale = 2,            !第二个y轴的缩放比例 hu\HK81m  
      color = magenta, (r`+q[  
      width = 3, *Id$%O  
      style = fdashed, 2}]6~i  
      "n2 (%, right scale)" WZ5[tZf  
    ~\/>b}^uf'  
    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 ?RvXO'ml  
      yscale = 2, Z$0r+phQk=  
      color = red, (6z^m?t?  
      width = 3, hN c;, 13  
      style = fdashed, 1Nw&Z0MI  
      "n3 (%, right scale)" +V1EqC*  
    ,5'LbO-  
    #/@U|g  
    ; ------------- l?(nkg["nY  
    diagram 2:                    !输出图表2 dv-yZRU:  
    Jl&bWp^3  
    "Variation ofthe Pump Power" G ;V@oT  
    @B ~! [l  
    x: 0, 10 _~_04p  
    "pump inputpower (W)", @x ;_K+b,  
    y: 0, 10 Y32F { z  
    y2: 0, 100 rwFR5  
    frame 8,YF>O&  
    hx i9k7rEW^  
    hy zc]F  
    legpos 150, 150 C=@BkneQ  
    KM 4w{  
    f: (set_P_in(pump, x);P_out(signal_fw)), !set_P_in(pump,x)改变泵浦信道功率;P_out(signal_fw)输出前向信号光 #NNj#  
      step = 5, .=rv,PWjZ  
      color = blue, [e3|yE6  
      width = 3, L@S"c (  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 5}9-)\8=z  
      finish set_P_in(pump, P_pump_in) [6 wI22  
     ?1r@r  
    f: (set_P_in(pump,x); 100 * n_av(2)),   !改变泵浦信号功率对能级2上激活粒子占比的影响 <qZXpQ#  
      yscale = 2, B P"PUl:  
      step = 5, ]l+Bg;F#V  
      color = magenta, %9[GP7?  
      width = 3, Ol9U^  
      "population of level 2 (%, rightscale)", FFbMG:>:  
      finish set_P_in(pump, P_pump_in) >NB}Bc  
    *]z.BZI:  
    f: (set_P_in(pump,x); 100 * n_av(3)),   !改变泵浦信号功率对能级3上激活粒子占比的影响 b@^M|h.Va  
      yscale = 2, '15j$q  
      step = 5, p]`pUw{  
      color = red, ]?-56c,  
      width = 3,  vi4 1`  
      "population of level 3 (%, rightscale)", Y::fcMJr;Q  
      finish set_P_in(pump, P_pump_in) !W^2?pqN  
    7E Y~5U/4  
    %2BFbaE  
    ; ------------- 8jqt=}b  
    diagram 3:                         !输出图表3 kBIF[.v(\  
    h\'GL(?DBI  
    "Variation ofthe Fiber Length" FO_nS   
    #lltXqvD?  
    x: 0.1, 5 U`FybP2R~  
    "fiber length(m)", @x FvG9PPd  
    y: 0, 10 [2 2IF  
    "opticalpowers (W)", @y *IGxa  
    frame Ou2H~3^PL  
    hx _I~TpH^1K  
    hy sl6p/\_w  
    Lj*F KP\{  
    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 <B`}18x  
      step = 20,             1a_;[.s  
      color = blue, +n,8o:fU:  
      width = 3, F Paj p  
      "signal output" 1GOa'bxm  
    qqw6p j  
    ;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 IS&`O= 7  
       step = 20, color = red, width = 3,"residual pump" l]WV?^*  
    6 $ IXER  
    ! set_L(L_f) {restore the original fiber length } ~(aq3ngo.  
     cD0  
    wrqdQ} @(  
    ; ------------- yel>-=Vn  
    diagram 4:                                  !输出图表4 sB0+21'R  
    C^n L{ZP,  
    "TransverseProfiles" *Z{$0K  
    WcH^bAY6  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) [ R~+p#l+Q  
    + W@r p#  
    x: 0, 1.4 * r_co /um ~|DF-t V  
    "radialposition (µm)", @x V]q{N-Iq  
    y: 0, 1.2 * I_max *cm^2 ?b#?Vz  
    "intensity (W/ cm&sup2;)", @y QMtt:f]?i  
    y2: 0, 1.3 * N_Tm ATnD~iACY  
    frame ]2h[.qa  
    hx ^]U2Jd  
    hy d[~c-G6  
    J3:P/n&  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 am%qlN<  
      yscale = 2, g,,cV+  
      color = gray,  \W=  
      width = 3, 7]nPWz1%*  
      maxconnect = 1, _Fz )2h,3  
      "N_dop (right scale)" I]k'0LG*^  
    gKYn*  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 o8s&n3mY}y  
      color = red, ~B=\![  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 2$\f !6p  
      width = 3, LL[ +QcH  
      "pump" hJ}G5pX  
    G x,D'H'  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 +vU.#C_2  
      color = blue, 3_h%g$04 s  
      maxconnect = 1, fLD9RZ8_  
      width = 3, dHp6G^Y  
      "signal" Y\op9 Fw  
    |HG%o 3E]  
    e<p$Op  
    ; ------------- ?-i|f_`  
    diagram 5:                                  !输出图表5 [;?^DAnK2  
    Yt#($}p  
    "TransitionCross-sections" UoLO#C0i  
     >#q|Pjv]  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) ]$L[3qA.  
    ?BLOc;I&a  
    x: 1450, 2050 3YLnh@-  
    "wavelength(nm)", @x JQtH },T r  
    y: 0, 0.6 plf<O5'  
    "cross-sections(1e-24 m&sup2;)", @y VtKN{sSnu  
    frame xS(sRx+A  
    hx t&&OhHK  
    hy ':>B %k  
    *jJ62-o  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 H!Od.$ZIX  
      color = red, NNfCJ|  
      width = 3, v4v+;[a%  
      "absorption" S5d{dTPq  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 uZYeru"w  
      color = blue, S1B/ClKWq  
      width = 3, c3}}cFe  
      "emission" sbs"26IE  
    S1+#qs {5a  
     
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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