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

(* qpQiMiB#g'  
Demo for program"RP Fiber Power": thulium-doped fiber laser, a ]:xsJ~  
pumped at 790 nm. Across-relaxation process allows for efficient <isU D6TC  
population of theupper laser level. H
h%"  
*)            ！（*  *）注释语句 ahdwoB  
Lf:#koaC  
diagram shown: 1,2,3,4,5  ！指定输出图表 2Jky,YLcb  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 DJ0jtv6nQ-  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 ^;K"Y'f$  
; 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 W9{i~.zo  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 '9'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 \?wKs  
XI
:+EeM?  
include"Units.inc"         ！读取“Units.inc”文件中内容 H2xDC_Fs  
\irKM8]LJ  
include"Tm-silicate.inc"    ！读取光谱数据 39m8iI%w[  
^?_MIS`4N  
; Basic fiberparameters:    ！定义基本光纤参数 d} 5  
L_f := 4 { fiberlength }      ！光纤长度 S(Z\h_m(  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 -aLM*nIoe  
r_co := 6 um { coreradius }                ！纤芯半径 W0;QufV  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 +U<.MVOo.  
KYyoN  
; Parameters of thechannels:                ！定义光信道 I]HLWF  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm o6RT4`  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 QE pCU)  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W TD-B\ @_  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um _>)@6srC  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 R%~~'/2V  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 ++UxzUd  
 )y6  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm W4qnXD1n  
w_s := 7 um                          ！信号光的半径 fLeHn,*,"  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 I?nU+t;  
loss_s := 0                            ！信号光寄生损耗为0 EuA352x  
iaQfxQP1w%  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 `
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V6+:g=@U-l  
; 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 E:O/=cT  
calc R6`mmJ+'  
  begin :?}>Q  
    global allow all;                   ！声明全局变量 Sj:c {jyJd  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 t0Lt+E|J  
    add_ring(r_co, N_Tm); Ki1 zi~  
    def_ionsystem();              ！光谱数据函数 *>!-t   
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 1d842pt  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 fB&i{_J  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 Z"KrirZ  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 -;;m/QM  
    finish_fiber();                                   _{ 2`sL)  
  end; )Jw$&%/{1  
6;@:/kl t  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 _,v>P2)  
show "Outputpowers:"                                   ！输出字符串Output powers： 9xK#(M  
show"pump:     ", P_out(pump):d3:"W"  ！输出字符串pump：和计算值（格式为3个有效数字，单位W） "rc QS H  
show"signal:   ",P_out(signal_fw):d3:"W" ！输出字符串signal：和计算值（格式为3个有效数字，单位W） *v: .]_;  
D(&Zq7]n  
!s !el;G  
; ------------- knzo6  
diagram 1:                   !输出图表1 9 &Ry51  
dj4a)p|YN  
"Powers vs.Position"          ！图表名称 ]dV$H  
I)9,  
x: 0, L_f                      ！命令x: 定义x坐标范围 O;&5> W,Z  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 #Uep|A  
y: 0, 15                      ！命令y: 定义y坐标范围 +QOK]NJN  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 EY.m,@{  
frame          ！frame改变坐标系的设置 gxJ12' m  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） w_;$ahsu~  
hx             ！平行于x方向网格 56u_viZ=8  
hy              ！平行于y方向网格 kIe)ocJg  
2|(lKFkQ  
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 0bD\`Jiv,  
  color = red,  ！图形颜色 Z0v&AD=  
  width = 3,   ！width线条宽度 biForT_no  
  "pump"       ！相应的文本字符串标签 pB]*cd B?  
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 {qU;>;(  
  color = blue,     )4hA Fy6l  
  width = 3, cBU3Q<^
 
  "fw signal" H(O|y2  
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 TTWiwPo59  
  color = blue, ,|;\)tT  
  style = fdashed, d+5v[x~'  
  width = 3, (/9erfuJ  
  "bw signal" e~9g~k]s  
YY$Z-u(  
f: 100 * n(x, 2),    ！n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 5^CWF|  
  yscale = 2,            ！第二个y轴的缩放比例 fQ-IM/z  
  color = magenta, b`Jsu!?{  
  width = 3, NO/5pz}1  
  style = fdashed, kbbHa_;aqV  
  "n2 (%, right scale)" !/!Fc'A  
ux17q>G  
f: 100 * n(x, 3),          ！n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比 ?(}~[  
  yscale = 2, i[z#5;x+<  
  color = red, Gv[(0  
  width = 3, JW=q'ibR  
  style = fdashed, "`4M4`'  
  "n3 (%, right scale)" W@%g_V}C*  
G,1g~h%I$  
A!uiM*"W  
; ------------- IJ:JH=8  
diagram 2:                    ！输出图表2 0,8RA_Ca}  
Adfnd  
"Variation ofthe Pump Power" *Uf>Xr&  
|@f\[v9`  
x: 0, 10 g:6`1C  
"pump inputpower (W)", @x {h.j6  
y: 0, 10 :o~]d  
y2: 0, 100 q$`>[&I~)  
frame 3;!!`R>e  
hx 5)0'$Xxqa0  
hy u_8Z^T  
legpos 150, 150 g&8-X?^Q  
Um*&S.y  
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 Gq%,'amf  
  step = 5, *<h)q)HS  
  color = blue, 23a:q{R  
  width = 3, X+N8r^&  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 'e$8 IZm  
  finish set_P_in(pump, P_pump_in) m}>Q#IVZ  
qagR?)N)u  
f: (set_P_in(pump,x); 100 * n_av(2)),   ！改变泵浦信号功率对能级2上激活粒子占比的影响 m6A\R KJ'  
  yscale = 2, k\g:uIsv$  
  step = 5, KYl!Iw67d  
  color = magenta, ~8-xj6^  
  width = 3, glBS|b$\:  
  "population of level 2 (%, rightscale)", |8)\8b|VuC  
  finish set_P_in(pump, P_pump_in) h}DKFrHW;-  
hrXk7}9  
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 K `A8N  
  yscale = 2, ,e GF~  
  step = 5, @%fL*^yr;C  
  color = red, \6aisK  
  width = 3, _?eT[!oO8  
  "population of level 3 (%, rightscale)", [| N73m,&  
  finish set_P_in(pump, P_pump_in) CT'#~~QB  
$H&:R&Us  
/bo`@ !-#  
; ------------- gg Nvm  
diagram 3:                         ！输出图表3 ;Sp/N4+   
7*He 8G[W  
"Variation ofthe Fiber Length" \Xr*1DI<  
o*oFCR]j  
x: 0.1, 5 k<NxI\s8]  
"fiber length(m)", @x K}'?#a(aX=  
y: 0, 10 MN:LL <  
"opticalpowers (W)", @y tX,x%(  
frame E@AV?@<sc  
hx aY6F4,7/B  
hy 'T;;-M3*  
0ZZ Wj%  
f: (set_L(x);P_out(signal_fw)),     ！改变光纤长度对信号光输出功率的影响 u*rHKZ9i  
  step = 20,             N:
Ir63X*#  
  color = blue, *>xCX  
  width = 3, .nEiYS|T  
  "signal output" O]Y
z7  
Ynp#3r  
;f: (set_L(x);P_out(pump)),                     ！改变光纤长度对泵浦信号输出功率的影响 xLgZtLt9  
   step = 20, color = red, width = 3,"residual pump" U\-R'Z>M  
~@T`0W-Py  
! set_L(L_f) {restore the original fiber length } Hxleh><c-  
#wZH.i#  
Lg|d[*;'7  
; ------------- z*9 ke  
diagram 4:                                  ！输出图表4 Zq5~M bldh  
)CgH|z:=b  
"TransverseProfiles" io@f5E+?  
Iv*u#]{t  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) py'xBi6}v  
\Pe+]4R-Xo  
x: 0, 1.4 * r_co /um :H+8E5  
"radialposition (µm)", @x bfy=  
y: 0, 1.2 * I_max *cm^2 `;j$]  
"intensity (W/ cm&sup2;)", @y r\)bN4-g  
y2: 0, 1.3 * N_Tm IaU%L6Q]  
frame 2IUd?i3~l  
hx tf[)| /M  
hy ,J:Ro N_:  
t+{vbS0  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 ;V?d;O4u  
  yscale = 2, ~@#a*="  
  color = gray, :T<5Tq*+x  
  width = 3, <y&&{*KW8m  
  maxconnect = 1, &y(%d 7@/  
  "N_dop (right scale)" 9Hd_sNUu\  
?nq%'<^^  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 xErb11  
  color = red, 9PMIF9"  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 \k^ojzJ  
  width = 3, 8;#yXlf  
  "pump" ?-)v{4{s  
h[Uo6`  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 y0~ttfv  
  color = blue, ;~'&m  
  maxconnect = 1, !Lw]aHb  
  width = 3, n|KYcU#  
  "signal" i83[':  
Iga#,k+%  
Yy6$q\@rV  
; ------------- a,r B7aD  
diagram 5:                                  ！输出图表5 ),|z4~  
$48Z>ij?f  
"TransitionCross-sections" +_+j"BT  
`*U$pg  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) o"_'cNAz  
%%zlqd"0  
x: 1450, 2050 
beSU[  
"wavelength(nm)", @x Rd|8=`)  
y: 0, 0.6 ZY@ntV?  
"cross-sections(1e-24 m&sup2;)", @y /bPs0>5  
frame \ Ce
*5
h  
hx `uH7~ r^  
hy
b&dv("e 4  
5$+ssR_?k  
f: s12_Tm(x * nm) /1e-24,      ！Tm<sup>3+</sup>吸收截面与波长的关系 xc\zRsY`  
  color = red, ge<D}6GQ  
  width = 3, <HzL%DX  
  "absorption" RBBmGZ  
f: s21_Tm(x * nm) /1e-24,  ！Tm³⁺发射截面与波长的关系 lk[Y6yE  
  color = blue,  1X&jlD?  
  width = 3, h72CGA|  
  "emission" N_Kdi%q  
>P&1or)e%  

感谢，视频上有点看不清楚