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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

(* vpZu.#5c  
Demo for program"RP Fiber Power": thulium-doped fiber laser, v[0DE*p  
pumped at 790 nm. Across-relaxation process allows for efficient G3Idxs  
population of theupper laser level. ^L>MZA ?  
*)            ！（*  *）注释语句 Gg 7Wm L  
Fpy6"Z?z  
diagram shown: 1,2,3,4,5  ！指定输出图表 \[Sm2/9v  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 Dj-\))L  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 1{SrHdD=  
; 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 k98< s  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 FY 1},sq  
; 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 w8eG;  
g*:ae;GP  
include"Units.inc"         ！读取“Units.inc”文件中内容 `_NnQ%  
jF%)Bhn(  
include"Tm-silicate.inc"    ！读取光谱数据 CL)1Q  
\_m\U.*  
; Basic fiberparameters:    ！定义基本光纤参数 tYI ]LL  
L_f := 4 { fiberlength }      ！光纤长度 AzLbD2Pl  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 ga4/,   
r_co := 6 um { coreradius }                ！纤芯半径 ( z8]FT  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 -/ (DP x  
3q~":bpAp  
; Parameters of thechannels:                ！定义光信道 M/::`yJQu  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm p)?qJ2c|  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 yt/20a  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W sD LVYD  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um !ol hZ  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 `jD8(}_  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 @ A~B ,  
uE,i-g0$Id  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm WUE)SVf  
w_s := 7 um                          ！信号光的半径 8ktjDs$=.:  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 Nz(c"3T;  
loss_s := 0                            ！信号光寄生损耗为0 SR&(HH$  
kPx]u\  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 }<( "0jC  
l _kg3e4  
; 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 otmIu`h  
calc y1,?ZWTayr  
  begin E5,%J  
    global allow all;                   ！声明全局变量 <GL}1W"Ay  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 Zd[y+$>  
    add_ring(r_co, N_Tm); FbNH+?  
    def_ionsystem();              ！光谱数据函数 !(MA5L-  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 ,XWay%8{E  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 ZI2K-z'e  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 /t$+Af,}  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 W%Y.SP$Y  
    finish_fiber();                                   i# pjv'C  
  end; p=8M0k  
E)&NP}k-P  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 )1ZJ  
show "Outputpowers:"                                   ！输出字符串Output powers： @1pW!AdN  
show"pump:     ", P_out(pump):d3:"W"  ！输出字符串pump：和计算值（格式为3个有效数字，单位W） &X#x9|=&O  
show"signal:   ",P_out(signal_fw):d3:"W" ！输出字符串signal：和计算值（格式为3个有效数字，单位W） _/QKWk&j  
?MV[=LPL  
^F0k2pB  
; ------------- 'NQMZfz  
diagram 1:                   !输出图表1 7 SjF9x  
OBKC$e6I  
"Powers vs.Position"          ！图表名称 %8Z|/LGg  
C|.$L<`  
x: 0, L_f                      ！命令x: 定义x坐标范围 bik] JIM  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 k=h/i8i2z  
y: 0, 15                      ！命令y: 定义y坐标范围 7`uA  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 2-"Lxe65f  
frame          ！frame改变坐标系的设置 ),D`ZRXS  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） h8iaJqqvJ  
hx             ！平行于x方向网格 ohQz%?r  
hy              ！平行于y方向网格 0,vj,ic*WX  
mR" 2  
f: P(pump, x),    ！命令f: 定义函数图；P(pump, x)函数是计算x位置处的泵浦光功率 )M&Azbu  
  color = red,  ！图形颜色 zn2"swhq\V  
  width = 3,   ！width线条宽度 ~n8Oyr  
  "pump"       ！相应的文本字符串标签 nU?Xc(Xy  
f: P(signal_fw, x),  ！P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 {Gk}3u/  
  color = blue,     8^P2GG'+-  
  width = 3, 8r`VbgI&  
  "fw signal" *hk{q/*Qw  
f: P(signal_bw, x),   ！P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 ?vht~5'  
  color = blue, +s+PnZ%0V  
  style = fdashed, OVQxZ~uQ  
  width = 3, T;:',T[G  
  "bw signal" yO$r'9?,*  
T0*TTB&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 $ sA~p_]  
  yscale = 2,            ！第二个y轴的缩放比例 #cp$ltY  
  color = magenta, ;:-2~z~~  
  width = 3, zal3j^  
  style = fdashed, A_6/umF[ZA  
  "n2 (%, right scale)" |04}zU%N  
lk+=2 6>  
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 4Rrw8Bw  
  yscale = 2, 3-9J "d !  
  color = red, AT8B!m   
  width = 3, Y bn=Gy  
  style = fdashed, mTXNHvv  
  "n3 (%, right scale)" +X%fcoc  
?VOs:sln  
$E4O^0%/p  
; ------------- e%@[d<Ta\  
diagram 2:                    ！输出图表2 eHnei F  
)K\k6HC.  
"Variation ofthe Pump Power" QX.F1T 2e?  
Be14$7r  
x: 0, 10 J<5vs3[9  
"pump inputpower (W)", @x RqX4ep5j  
y: 0, 10 ?^G$;X7B  
y2: 0, 100 6>N u=~  
frame [hv3o0".  
hx o{-USUGj7  
hy 6Ymo%OT  
legpos 150, 150 qRP8dH  
!g8.8(/t)  
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 9%)& }KK|  
  step = 5, 8tFyNl`c  
  color = blue, ]uj.uWD  
  width = 3, xt<, (4u  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 g6a3MJV`  
  finish set_P_in(pump, P_pump_in) u UVV>An  
a,0o{* (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 ;ijfI  
  yscale = 2, P+zI9~N[  
  step = 5, z7l;|T  
  color = magenta, n nnA,  
  width = 3, Nh7!Ah  
  "population of level 2 (%, rightscale)", {'wU&!  
  finish set_P_in(pump, P_pump_in) T=f;n;/>  
4iPua"8  
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 KJvJUq  
  yscale = 2, Fp|rMq  
  step = 5, W%jX-  
  color = red, rbJ)RN^.  
  width = 3, ;~1/eF  
  "population of level 3 (%, rightscale)", S>ylAU;N  
  finish set_P_in(pump, P_pump_in) :#&U95EC0  
'`goy%Wd  
b8b PK<  
; ------------- :PjUl  
diagram 3:                         ！输出图表3 $d??(   
%},S#5L3  
"Variation ofthe Fiber Length" sp |y/r#  
k s`  
x: 0.1, 5 JpHsQ8<  
"fiber length(m)", @x !\k#{ 1[!  
y: 0, 10 sxQ,x/O  
"opticalpowers (W)", @y 4[EO[x4C  
frame vM3|Ti>a'  
hx 6~Oje>w;  
hy @XG`D>%k  
yI|?iBc7nC  
f: (set_L(x);P_out(signal_fw)),     ！改变光纤长度对信号光输出功率的影响 +MoxvW6  
  step = 20,             AU?YZEAei  
  color = blue, <!HD tN  
  width = 3, tIy/QN_42  
  "signal output" .STf  
Zz*mf+  
;f: (set_L(x);P_out(pump)),                     ！改变光纤长度对泵浦信号输出功率的影响 9kg>)ty@  
   step = 20, color = red, width = 3,"residual pump" u$/2XO  
ZxeE6&#M^w  
! set_L(L_f) {restore the original fiber length } FCB/FtI0  
c"&!=@  
I EsD=  
; ------------- P:h4  
diagram 4:                                  ！输出图表4 >`V|`Zi ?  
iU+,Jeu  
"TransverseProfiles" Xqva&/-  
r_<i*l.  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) Hf]}OvT>Z  
/Ta0}Y(y  
x: 0, 1.4 * r_co /um Ecl7=-y  
"radialposition (µm)", @x Jz8#88cY  
y: 0, 1.2 * I_max *cm^2 ZC-evy  
"intensity (W/ cm&sup2;)", @y o>rlrqr?_  
y2: 0, 1.3 * N_Tm  >33b@)  
frame <EN[s  
hx (2\ekct ^  
hy `e;Sjf<  
[ Zqg"`  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 0YRYCO$  
  yscale = 2, r|BKp,u9  
  color = gray, :< 3;7R'5  
  width = 3, (S 3kP5:F  
  maxconnect = 1, ' g!_Flk  
  "N_dop (right scale)" LO*a>9LI  
>oYwzK0&  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 MP&4}De  
  color = red, {"AYOc>2|  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 n8D;6#P^  
  width = 3, %z_b/yG  
  "pump" zYJ`.,#C 5  
w}<I\*\`!  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 UdgI<a~`k6  
  color = blue, m`0{j1K  
  maxconnect = 1, 6C}Z1lZl  
  width = 3, uXa}<=O  
  "signal" T $]L 5  
eb woMG,B-  
T<,tC"  
; ------------- APm[)vw#f  
diagram 5:                                  ！输出图表5 AQGE(%X  
g[)hm`{?  
"TransitionCross-sections" u<r('IW0  
XE%6c3s  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) A^7Zy79  
?Og ;W9i  
x: 1450, 2050 e' ;c8WF3E  
"wavelength(nm)", @x UsKn4Kh  
y: 0, 0.6 5 : >  
"cross-sections(1e-24 m&sup2;)", @y pl/$@K?L  
frame G2k71{jK  
hx SvJ8Kl OV  
hy j`hbQp\`  
WuXRL}!\,  
f: s12_Tm(x * nm) /1e-24,      ！Tm3+吸收截面与波长的关系 X2kLbe  
  color = red, r/:'}os;  
  width = 3, pMrf i}esx  
  "absorption" Cagq0-:(p  
f: s21_Tm(x * nm) /1e-24,  ！Tm3+发射截面与波长的关系 Y0'^S<ox  
  color = blue, QNBzc {XB  
  width = 3, 0kEq|k9  
  "emission" t $%}*@x7  
Ki\jiflc7  
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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