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小火龙果 2020-05-28 16:28

RP Fiber Power仿真设计掺铥光纤激光器代码详解

(* aQFYSl  
Demo for program"RP Fiber Power": thulium-doped fiber laser, sd8o&6  
pumped at 790 nm. Across-relaxation process allows for efficient &R*d/~SU  
population of theupper laser level. _7$j>xX  
*)            ！（*  *）注释语句 |nD2k,S<?  
`r>WVPS|  
diagram shown: 1,2,3,4,5  ！指定输出图表 lrq !}\aX  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 fU)hn  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 1P2%n[y  
; 3:"Variation of the Fiber Length"！信号输出功率vs 光纤长度的变化，仿真最佳光纤长度 B}P,sFghw  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 /B1< N}  
; 5:"Transition Cross-sections"    ！不同波长的跃迁横截面，横坐标波长，纵坐标为横截面 KM0#M'dXy  
sSD(mO<(  
include"Units.inc"         ！读取“Units.inc”文件中内容 VIi|:k  
b55|JWfC`  
include"Tm-silicate.inc"    ！读取光谱数据 7BI0g@$Nn]  
C(,s_Ks  
; Basic fiberparameters:    ！定义基本光纤参数 #C>pA<YJzK  
L_f := 4 { fiberlength }      ！光纤长度 TF=S \ Q  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 *~&W?i  
r_co := 6 um { coreradius }                ！纤芯半径 $AsM 9D<BE  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 ZklidHL');  
m"x~Fjvd  
; Parameters of thechannels:                ！定义光信道 $(zJ  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm -BoN}xE4  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 :hJhEQH(9  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W ^@[[,1"K  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um -h.YQC`  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 aL=VNZ!Pqc  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 Y =` 3L  
89 fT?tT  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm 5@Py`  
w_s := 7 um                          ！信号光的半径 /#,<> EfT  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 m,up37-{  
loss_s := 0                            ！信号光寄生损耗为0 orHVL2 KK  
6#{= E @  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 #4c uNX5m%  
},f7I^s|  
; Function for defining themodel:   ！定义模型函数，一定要有calc命令，否则函数只会被定义，但不会被执行 &kO4^ A  
calc |}mBW@ah  
  begin ^R<= }  
    global allow all;                   ！声明全局变量  dc5B#  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 R9#Z= f,  
    add_ring(r_co, N_Tm); }W|CIgF*  
    def_ionsystem();              ！光谱数据函数  WHpbQQX  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 HE( U0<9c  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 Hss{Sb(  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 vNtbb]')m  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 %pg*oX1VK6  
    finish_fiber();                                   2G'G45Q  
  end; ^WD [>E~  
Y":hb;&  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 ZjI^0D8  
show "Outputpowers:"                                   ！输出字符串Output powers： Y0eu^p)  
show"pump:     ", P_out(pump):d3:"W"  ！输出字符串pump：和计算值（格式为3个有效数字，单位W） KY"~Ta`  
show"signal:   ",P_out(signal_fw):d3:"W" ！输出字符串signal：和计算值（格式为3个有效数字，单位W） T:}Ed_m}q  
K1+,y1c  
#Ta@A~.L  
; ------------- ix$+NM<n  
diagram 1:                   !输出图表1 (wA|lK3  
94lmsE  
"Powers vs.Position"          ！图表名称 W&p-Z"=)  
f9\7v_  
x: 0, L_f                      ！命令x: 定义x坐标范围 C]):+F<7  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 m[8#h(s*t  
y: 0, 15                      ！命令y: 定义y坐标范围 MBwp{ET!p  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 {9=U6m^R2  
frame          ！frame改变坐标系的设置 8vP d~te  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） 2]C0d8=*?  
hx             ！平行于x方向网格 0<Pe~i_=  
hy              ！平行于y方向网格 O42An$}  
5GRN1Aov<  
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 K8RloDjk_A  
  color = red,  ！图形颜色 {Rz`)qqE  
  width = 3,   ！width线条宽度 TZ*ib~  
  "pump"       ！相应的文本字符串标签 lq9c2xK  
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 X:!%"K%}  
  color = blue,     gT+/CVj R  
  width = 3, |LjCtm)@+  
  "fw signal" :?^(&3;  
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 AzQ}}A;TSx  
  color = blue, cCj3,s/p  
  style = fdashed, d6n6= [*  
  width = 3, ]v#T'<Nl  
  "bw signal" >AfJxdd1  
5&xvY.!27V  
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 3)eeUO+  
  yscale = 2,            ！第二个y轴的缩放比例 K:{Q~+   
  color = magenta, \e?T 9c6,  
  width = 3, zzx4;C",u  
  style = fdashed, Gs9jX/ #  
  "n2 (%, right scale)" dGfWRqS]  
Fd 91Y  
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 $i2gOz  
  yscale = 2, p75w^  
  color = red, &=UzF  
  width = 3, kOc'@;_O  
  style = fdashed, %Wu8RG}  
  "n3 (%, right scale)" q)vD "{0.  
<zUmcZ  
S xgY q  
; ------------- .Q#Eb %%  
diagram 2:                    ！输出图表2 dEL>Uly  
J|b1 K]  
"Variation ofthe Pump Power" uI%[1`2N-  
fXqe7[  
x: 0, 10 L\B+j+~  
"pump inputpower (W)", @x bH.">IV  
y: 0, 10 `=>Bop)  
y2: 0, 100 PNG'"7O  
frame #}gc6T~0  
hx C6Mb(&  
hy i a|F  
legpos 150, 150 r*$"]{m}  
BkJcT  
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 l)|CPSN?w  
  step = 5, -cW5v  
  color = blue, WV6vM()#!C  
  width = 3, 'X?`+2wK   
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 4VooU [Ka(  
  finish set_P_in(pump, P_pump_in) qd.b&i  
3! +5MsR+  
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 BAPi<U'D  
  yscale = 2, [sad}@R7  
  step = 5, 3646.i[D  
  color = magenta, v3/cNd3  
  width = 3, Jk~T.p?tF  
  "population of level 2 (%, rightscale)", olJ9Kfc0  
  finish set_P_in(pump, P_pump_in) BBx"{~  
7OZ s~6(  
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 AV'>  
  yscale = 2, @fY!@xSf  
  step = 5, QVP $e`4  
  color = red, I?PKc'b  
  width = 3, x88$#N>Q5  
  "population of level 3 (%, rightscale)", ucn aj|  
  finish set_P_in(pump, P_pump_in) lH6t  d  
N7E[wOP  
mA4v  4z  
; ------------- [W2p}4(  
diagram 3:                         ！输出图表3 mrJQB I+  
a@7we=!  
"Variation ofthe Fiber Length" k/LV=e7  
$nVTN.k  
x: 0.1, 5 $'&5gFr9  
"fiber length(m)", @x T#( s2  
y: 0, 10 7e40 }n  
"opticalpowers (W)", @y ctCfLlK  
frame [$./'-I]  
hx Ve=0_GR0  
hy ;6]+/e7O  
z><JbSE?  
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 >GjaA1,  
  step = 20,             5~sJ$5<,  
  color = blue, eg}|%GG  
  width = 3, ,wq.C6;&  
  "signal output" 1{,WY(,c  
*R&g'y^d  
;f: (set_L(x);P_out(pump)),                     ！改变光纤长度对泵浦信号输出功率的影响 :+;F"_  
   step = 20, color = red, width = 3,"residual pump" L*5&hPU  
tf/ f-S  
! set_L(L_f) {restore the original fiber length } Q!"Li  
~MXPiZG?  
R#r?<Ofw4  
; ------------- S`R ( _eD@  
diagram 4:                                  ！输出图表4 ou(9Qf zN  
C[pAa8  
"TransverseProfiles" c#l (~g$D+  
9]S}m[8k  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) a-YK*  
!g}9xIL  
x: 0, 1.4 * r_co /um 0h; -Yg  
"radialposition (µm)", @x zX5p'8-  
y: 0, 1.2 * I_max *cm^2 3wr~P  
"intensity (W/ cm&sup2;)", @y aMHIOA%Kh  
y2: 0, 1.3 * N_Tm J|I|3h<T  
frame C ]#R7G  
hx H8\N~>  
hy ad"&c*m[  
`*~:n vU  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 7f`jl/   
  yscale = 2, xWV_Do)z  
  color = gray, XjX<?W  
  width = 3, ucMl>G'!gX  
  maxconnect = 1, ir\   
  "N_dop (right scale)" .t["kaA  
SQliF[-  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 ` "9Y.KU  
  color = red, !,1~:*:  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 ."H5.'  
  width = 3, *{tJ3<t(1  
  "pump" eDy}_By^  
Nl(Aa5:!  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 V^f'4*~'  
  color = blue, H%/$Rqg  
  maxconnect = 1, Ru sa &#[  
  width = 3, B'=*92i>S  
  "signal" G& ;W  
8HWY]:| oh  
S4 tdW A  
; ------------- iPs()IN.O  
diagram 5:                                  ！输出图表5 6b)1B\p  
1~_]"Y'  
"TransitionCross-sections" Et7AAV*8g  
u2F 3>s  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) $+rdzsf)+/  
t=U[ ;?  
x: 1450, 2050 9aXm}  
"wavelength(nm)", @x q!FJP9x  
y: 0, 0.6 Qs4Jl;Y_  
"cross-sections(1e-24 m&sup2;)", @y yJgnw6>r2  
frame zZA I"\;W  
hx J|K~a?&vN  
hy Q}1PPi,  
i/WYjo  
f: s12_Tm(x * nm) /1e-24,      ！Tm3+吸收截面与波长的关系 <iTaJa$0m  
  color = red, rb9 x||  
  width = 3, /.}&yRR  
  "absorption" ^^)Pv#[3  
f: s21_Tm(x * nm) /1e-24,  ！Tm3+发射截面与波长的关系 1 iE  
  color = blue, [y'jz~9c  
  width = 3, kWr*+3Xq  
  "emission" []u!piW  
2O4U ytN  
lileisgsz 2021-09-28 09:47
感谢，视频上有点看不清楚
查看本帖完整版本: [-- RP Fiber Power仿真设计掺铥光纤激光器代码详解 --] [-- top --]

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