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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

(* x-i1:W9;  
Demo for program"RP Fiber Power": thulium-doped fiber laser, @)>Z+g  
pumped at 790 nm. Across-relaxation process allows for efficient UZ<K'H,q  
population of theupper laser level. )j;^3LiV3  
*)            ！（*  *）注释语句 |]-Zz7N)  
\'~ E%=Q  
diagram shown: 1,2,3,4,5  ！指定输出图表 Zn9tG:V  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 : UeK0  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 }=X: F1S  
; 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 oC`F1!SfOO  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 `cp\UH@  
; 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 3\W/VBJJ  
[9 MH"\  
include"Units.inc"         ！读取“Units.inc”文件中内容 6Vnq|;W3Zv  
W ^'|{9&m  
include"Tm-silicate.inc"    ！读取光谱数据 pGD@R=8  
W>#yXg9  
; Basic fiberparameters:    ！定义基本光纤参数 "$(+M t^  
L_f := 4 { fiberlength }      ！光纤长度 &tH?m;V  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 a&>NuMDI  
r_co := 6 um { coreradius }                ！纤芯半径 {+9RJmZg  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 M50I.Rd  
u1meys a{0  
; Parameters of thechannels:                ！定义光信道 P<g(i 6]  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm 0&s6PS%  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 i#-v4g  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W v+LJx    
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um ;VE y{%nF  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 rZ?:$],U!  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 ^m z9sV  
%u!=<yn'  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm ET.jjV  
w_s := 7 um                          ！信号光的半径 @v2<T1UC  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 ?%5VaxWJ  
loss_s := 0                            ！信号光寄生损耗为0 8m") )i-  
tA#Pc6zBuC  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 2 GRI<M  
Jk*cuf `rq  
; 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 Uxjc&o  
calc f\_RW;y|m  
  begin ]s=|+tz\V  
    global allow all;                   ！声明全局变量 ! JA;0[;l=  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 Gd!-fqNa'x  
    add_ring(r_co, N_Tm); 9rEBq&  
    def_ionsystem();              ！光谱数据函数 ~ *&\5rPb  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 `n$Ak5f  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 sqKx?r72  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 L('1NN 2  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 wsmgkg  
    finish_fiber();                                   ^Wld6:L{I  
  end; '?C6P5fm  
.?{no}u.  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 V}V->j*  
show "Outputpowers:"                                   ！输出字符串Output powers： ! VR&HEru  
show"pump:     ", P_out(pump):d3:"W"  ！输出字符串pump：和计算值（格式为3个有效数字，单位W） u=0O3-\h  
show"signal:   ",P_out(signal_fw):d3:"W" ！输出字符串signal：和计算值（格式为3个有效数字，单位W） %}@iz(*}>  
P3"R2-  
,' k?rQ  
; ------------- !R8%C!=a  
diagram 1:                   !输出图表1 d<-f:}^k0  
akvi^]x  
"Powers vs.Position"          ！图表名称 g`pq*D  
h,{Q%sqO  
x: 0, L_f                      ！命令x: 定义x坐标范围 YF{MXK}  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 ZN8j})lE  
y: 0, 15                      ！命令y: 定义y坐标范围 g@#he95 }  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 dWd%>9 }  
frame          ！frame改变坐标系的设置 _=$~l^Y[  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） )M0`dy{1  
hx             ！平行于x方向网格 PIH\*2\/  
hy              ！平行于y方向网格 MT/jpx  
\dHqCQ  
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 =7V4{|ESfy  
  color = red,  ！图形颜色 ^ 9+ Qxv  
  width = 3,   ！width线条宽度 7 z    
  "pump"       ！相应的文本字符串标签 _9>,9aL  
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 ExG(*[l  
  color = blue,     OQumA j  
  width = 3, 9\"\7S/Z  
  "fw signal" QVjHGY*R  
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 O=A R`r#u  
  color = blue, Pk;w.)kT  
  style = fdashed, x;[ .ZzQ  
  width = 3, eKr>>4,-P  
  "bw signal" PtkMzhX  
}sxs-  
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 Bj 7* 2}  
  yscale = 2,            ！第二个y轴的缩放比例 !` 1h *}  
  color = magenta, I<2`wL=  
  width = 3, c~U0&V_`j  
  style = fdashed, w>2lG3H<  
  "n2 (%, right scale)" Vq3NjN!+5  
pwN2Nzski  
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 >7BP}5`.;  
  yscale = 2, jgE{JK\n4  
  color = red, Lc~m`=B  
  width = 3, M !6Fnj  
  style = fdashed, *fm?"0M5  
  "n3 (%, right scale)" JA4Zg*7I  
p&Qb&nWk<  
Kyh6QA^  
; -------------  ,t 2CQ  
diagram 2:                    ！输出图表2 tz]0F5  
QjLU@?&  
"Variation ofthe Pump Power" IGTO|sT"  
1t e^dh:Vp  
x: 0, 10 $tu   
"pump inputpower (W)", @x 4(\1z6?D  
y: 0, 10 }#1.$a  
y2: 0, 100 jN+`V)p  
frame )FwOg;=3M"  
hx ftY&Q#[  
hy R"OT&:0/  
legpos 150, 150 4&NB xe  
Mg\588cI  
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 KJFQ)#SW!  
  step = 5, gp9O%g3'  
  color = blue, DAq H  
  width = 3, |Kd6.Mx  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 @zS/J,:v}  
  finish set_P_in(pump, P_pump_in) P{dR pH|  
8nI~iN?"   
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 <uIPv Zsx  
  yscale = 2, ~"S5KroN  
  step = 5, #xmiUN,|  
  color = magenta, ?e-rwaW  
  width = 3, ANPG3^w  
  "population of level 2 (%, rightscale)", >> cW0I/`  
  finish set_P_in(pump, P_pump_in) xLIyh7$t  
pW ~;B*hF  
f: (set_P_in(pump,x); 100 * n_av(3)),   ！改变泵浦信号功率对能级3上激活粒子占比的影响 KdR\a&[MA  
  yscale = 2, ybJa:  
  step = 5, "|i1A R:I  
  color = red, Rb<| <D+  
  width = 3, Yy 4Was#  
  "population of level 3 (%, rightscale)", cY} jPDH  
  finish set_P_in(pump, P_pump_in) ;2h"YU-b  
0(&uH0x  
M(8xwo-W  
; ------------- >]}VD "\  
diagram 3:                         ！输出图表3 36'J9h\  
b5g^{bzwu  
"Variation ofthe Fiber Length" F@/syX;bb5  
8;=?F>]xn  
x: 0.1, 5 %/zHL?RqJ  
"fiber length(m)", @x W9cvxsox  
y: 0, 10 &/EZn xl  
"opticalpowers (W)", @y 3>(~5  
frame f~d =1  
hx R(Vd[EGY  
hy *QW.#y>"j  
>ptI!\i}  
f: (set_L(x);P_out(signal_fw)),     ！改变光纤长度对信号光输出功率的影响 ,hK =x  
  step = 20,             LzXIqj'H7T  
  color = blue, Wm8BhO  
  width = 3, WV}pE~  
  "signal output" 1slt[&4N  
fR.raI4et  
;f: (set_L(x);P_out(pump)),                     ！改变光纤长度对泵浦信号输出功率的影响 rGH7S!\AM  
   step = 20, color = red, width = 3,"residual pump" }J5iY0  
z"5e3w  
! set_L(L_f) {restore the original fiber length } o\j<EQb.  
?Wt_Obl  
7({.kD6  
; ------------- -eSI"To L<  
diagram 4:                                  ！输出图表4 \l6mX In=>  
@Ng q+uXm  
"TransverseProfiles" ku^2K   
u@wQ )^  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) .hvn/5s  
_}Gs9sHr0K  
x: 0, 1.4 * r_co /um fv3)#>Dgp>  
"radialposition (µm)", @x 0txSF^x  
y: 0, 1.2 * I_max *cm^2 jM@@N.  
"intensity (W/ cm&sup2;)", @y 8/34{2048  
y2: 0, 1.3 * N_Tm y(#F&^|  
frame p|Fhh\,*`X  
hx I@a7!ugU65  
hy -JF|770i  
DA4!-\bt@  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 U|h@Pw z  
  yscale = 2, Q!%CU8!`&  
  color = gray, E{9{%J  
  width = 3, \;tKss!|  
  maxconnect = 1, "ZVBn!  
  "N_dop (right scale)" ZoC?9=k  
^?[^o\/@R  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 .uagD[${  
  color = red, B<'V7#L_  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 4sK|l|W  
  width = 3, T{K+1SPy4  
  "pump" ;v+CQx  
s.dn~|a  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 {_MU0=7c\  
  color = blue, s: q15"  
  maxconnect = 1, tbv6-) Hs  
  width = 3, !c`Q?aGV)  
  "signal" "/XS3s v"s  
<^ )0M  
-+I! (?  
; ------------- ZCJ8I  
diagram 5:                                  ！输出图表5 |V~P6o(/  
&FvNz  
"TransitionCross-sections" 8QZk0O  
t_VHw'~"  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) +Vf|YLbhJ  
\&qVr1|  
x: 1450, 2050 r@<;  
"wavelength(nm)", @x 't_=%^ q  
y: 0, 0.6 ;09J;sf  
"cross-sections(1e-24 m&sup2;)", @y s3kEux^  
frame \T]"pE+8l  
hx 6k3l/~R  
hy hJ4.:  
>%3c1  
f: s12_Tm(x * nm) /1e-24,      ！Tm3+吸收截面与波长的关系 S@"=,Xj M  
  color = red, !<6wrOMaO  
  width = 3, ti#sh{t  
  "absorption" yRi/YR#  
f: s21_Tm(x * nm) /1e-24,  ！Tm3+发射截面与波长的关系 >`\*{]  
  color = blue, O}f(h5!k  
  width = 3, {4m"S 7O  
  "emission" h'fD3Gr&  
~D=@4(f8|  
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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