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

(* ri1;i= W  
Demo for program"RP Fiber Power": thulium-doped fiber laser, VeipM  
pumped at 790 nm. Across-relaxation process allows for efficient ,@]*Xgt=  
population of theupper laser level. i*)BF
V_-  
*)            ！（*  *）注释语句 pt%*Y.)az  
m7|S'{+!  
diagram shown: 1,2,3,4,5  ！指定输出图表 d6f T  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 |Kq<}R  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 ?dyt!>C  
; 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 '!"rE1e  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 %D49A-R  
; 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 M#.dF{%%  
[85b+SKW  
include"Units.inc"         ！读取“Units.inc”文件中内容 z^o7&\:  
C*stj  
include"Tm-silicate.inc"    ！读取光谱数据 "H\R*\-0  
y
TR5*{?j  
; Basic fiberparameters:    ！定义基本光纤参数 9yK\<6}}QH  
L_f := 4 { fiberlength }      ！光纤长度 oi7Y
?hTj  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 5p>rQq0  
r_co := 6 um { coreradius }                ！纤芯半径 c{3P|O&.  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 2t;3_C  
7po;*?Ox  
; Parameters of thechannels:                ！定义光信道 b=kY9!GN,v  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm +O4//FC-"  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 T[- %b9h>  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W Dn48?A[v  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um juA}7   
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 TPA*z9n+B  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 ?!u9=??  
tP89gN^PA|  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm i8!err._  
w_s := 7 um                          ！信号光的半径 tN;^{O-(V  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 ~g}blv0q+B  
loss_s := 0                            ！信号光寄生损耗为0 (@NW
2  
a5/r|BiBK  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 v.53fx  
: cPV08i  
; 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 sWKv>bx  
calc z+c'-!e/  
  begin ~xJ^YkyH  
    global allow all;                   ！声明全局变量 5`QfysR5  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 #V.u[:mO  
    add_ring(r_co, N_Tm); "iJAM`Hi  
    def_ionsystem();              ！光谱数据函数 G_}oI|B  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 Rl'xEtaN  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道
j:$Z-s  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 +hcJ!$J7  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 Of#"nu  
    finish_fiber();                                   f\z9?Z(~  
  end; wj8\eK)]L  
@9lGU#  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 (!a\23  
show "Outputpowers:"                                   ！输出字符串Output powers：
:4)lmIu  
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） w+{{4<+cd  
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） p7L6~IN  
C't%e  
(`<B#D;  
; ------------- ]d*O>Pm  
diagram 1:                   !输出图表1 c^R "g)gr  
212 =+k  
"Powers vs.Position"          ！图表名称 P0rdGf 5T  
%;#9lkOXWH  
x: 0, L_f                      ！命令x: 定义x坐标范围 N6v*X+4JH  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 O]l-4X#8F  
y: 0, 15                      ！命令y: 定义y坐标范围 _zLEHEZ-  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 qc3?Aplj  
frame          ！frame改变坐标系的设置 I#xhmsF  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） `F~Fb S  
hx             ！平行于x方向网格 0Qg%48u
 
hy              ！平行于y方向网格 U+uIuhz  
&VxK AQMxN  
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 jRp @-S#V  
  color = red,  ！图形颜色 "WqM<kLa  
  width = 3,   ！width线条宽度  LNvkC4  
  "pump"       ！相应的文本字符串标签 \rCdsN2H  
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 S;BMM8U  
  color = blue,     7N0m7SC  
  width = 3, !9^GkFR6n  
  "fw signal" cSj(u%9}  
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 ve4QS P  
  color = blue, |\]pTA$2  
  style = fdashed, 5;9.&f  
  width = 3, 'IER9%V$  
  "bw signal" |h:3BV_  
=OR&,xt  
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 l> >BeZ  
  yscale = 2,            ！第二个y轴的缩放比例 os(}X(   
  color = magenta, 6uFGq)4p@  
  width = 3, jw]IpGTt  
  style = fdashed, }Z
`@Z'  
  "n2 (%, right scale)" OmP(&t7  
\)PS&Y8n  
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
sk. rJ  
  yscale = 2, <pUc( tPoz  
  color = red, CjA}-ee  
  width = 3,  ^9kdd[  
  style = fdashed, <zu)=W'R]  
  "n3 (%, right scale)" BimM)4g  
r3.v^  
q{.~=~  
; ------------- taOsC!Bp  
diagram 2:                    ！输出图表2 3lNw*M|")  
Pq( )2B  
"Variation ofthe Pump Power" 5?|P
C.  
zdDJcdbGd1  
x: 0, 10 Q1'D*F4  
"pump inputpower (W)", @x g/,O51f'  
y: 0, 10 .]Z,O>N
 
y2: 0, 100 ~#[ ZuMO?  
frame v aaZ  
hx #60<$HO:Z  
hy @aGS~^Uh  
legpos 150, 150 4U:+iumy2  
!!t@H\  
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 )^'wcBod,  
  step = 5, >JhIRf  
  color = blue, Z8Clm:S  
  width = 3, iAWoKW  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 FkT% -I  
  finish set_P_in(pump, P_pump_in) -OP5v8c f  
%u|qAF2uS  
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 B6vmBmN  
  yscale = 2, d_Vwjv&@/"  
  step = 5, 8%#uZG\}  
  color = magenta, c[0$8F>  
  width = 3, v]27+/a$c  
  "population of level 2 (%, rightscale)", oApI/o  
  finish set_P_in(pump, P_pump_in) l+ <x  
y/2U:H  
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 Afa{f}st  
  yscale = 2, `P4qEsZE>`  
  step = 5, 4B}w;d@R  
  color = red, =
U".L  
  width = 3, Lp*T=]C]  
  "population of level 3 (%, rightscale)", ?0Ca-T Rz  
  finish set_P_in(pump, P_pump_in) Jq`fD~
(7  
am05>c9  
(;h]'I@  
; ------------- j|(bDa
4\  
diagram 3:                         ！输出图表3 _>:g&pS/  
Vt
4}!b(O  
"Variation ofthe Fiber Length" ig/716r|  
$Y0bjS2J  
x: 0.1, 5 "WYcw\@U  
"fiber length(m)", @x jIc;jjAF  
y: 0, 10 IJXH_H_%*  
"opticalpowers (W)", @y E(U}$Zey  
frame (*fsv g~  
hx :7>Si%  
hy cCV"(Oo[H|  
0I?3@Nz6  
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 UmgLH Cz  
  step = 20,             NV-9C$<n2!  
  color = blue, .Um%6a-  
  width = 3,
-{b1&  
  "signal output" d8RpL{9\7  
v V^GIWK  
;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 3Yj}ra}  
   step = 20, color = red, width = 3,"residual pump" BK d(  
mQs'2Y6Oa  
! set_L(L_f) {restore the original fiber length } fZ g*@RR  
BtHvfoT  
MthThsr7  
; ------------- fp![Pbms.  
diagram 4:                                  ！输出图表4 f|^f^Hu:{  
A^p $~e\)  
"TransverseProfiles" B?%D  
ia_8$>xW+  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) };!c]/,  
610k#$  
x: 0, 1.4 * r_co /um 49zp@a  
"radialposition (µm)", @x +li^0+3-'  
y: 0, 1.2 * I_max *cm^2 -5ec8m8  
"intensity (W/ cm&sup2;)", @y "&+0jfLY+  
y2: 0, 1.3 * N_Tm TQ2Tt"  
frame 6Rf5  
hx e#OU {2X  
hy +Ae.>%}  
::`j@ ]  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 !aEp88u  
  yscale = 2, 1a!h&!$9  
  color = gray, 7=AKQ7BB>b  
  width = 3, P%lLKSA  
  maxconnect = 1, j{
Fo 6##  
  "N_dop (right scale)" 5,((JxX$  
H
5I#/j  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 0Yjy  
  color = red, ,RHHNTB("  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 )yK!qu  
  width = 3, -?'CUm*Od  
  "pump" g:clSN,  
dCK-"#T!  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 7@"
X~C  
  color = blue, J@TM>R  
  maxconnect = 1, N.`]D)57  
  width = 3, By_Ui6:D  
  "signal" [Bh]\I'  
Z7/dRc   
YBO53S]=  
; ------------- 2yZ6:U~  
diagram 5:                                  ！输出图表5 bcs!4  
?f`-&c;  
"TransitionCross-sections" wm8x1+P  
)pLq^j  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) vSA%A47G  
WI,=?~-   
x: 1450, 2050 _YS+{0 Vq%  
"wavelength(nm)", @x ("oA{:@d  
y: 0, 0.6 #50)DwD  
"cross-sections(1e-24 m&sup2;)", @y }sU\6~

  
frame Mt Z(\&~  
hx j5O*H_D  
hy Jq#Cn+zW  
{\&"I|dpe  
f: s12_Tm(x * nm) /1e-24,      ！Tm³⁺吸收截面与波长的关系 gsp7N  
  color = red, NHF?73:  
  width = 3, *La =7y:  
  "absorption" ^IpiNY/%Q  
f: s21_Tm(x * nm) /1e-24,  ！Tm³⁺发射截面与波长的关系 w0!,1 Ry  
  color = blue, S\ZAcz4  
  width = 3, Q2NnpsA^6  
  "emission" d/>,U7eS[+  
Fzs'@*  

感谢，视频上有点看不清楚