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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

(* K%v1xZ  
Demo for program"RP Fiber Power": thulium-doped fiber laser, 4)|8Eu[p7  
pumped at 790 nm. Across-relaxation process allows for efficient :a ->0 l  
population of theupper laser level. xG&)1sT#-\  
*)            ！（*  *）注释语句 q@t0NvNSu  
?W^c4NtP  
diagram shown: 1,2,3,4,5  ！指定输出图表 hCjR&ZA  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 i.D3'l  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 ,I1 RV  
; 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 Qx;\USv  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 C CBfKp  
; 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 ?T9(Vw  
#txE=e"&o  
include"Units.inc"         ！读取“Units.inc”文件中内容 +LM#n#T  
TJ q~)Bm  
include"Tm-silicate.inc"    ！读取光谱数据 1cS}J:0P  
NS%WeAf  
; Basic fiberparameters:    ！定义基本光纤参数 }by;F9&B  
L_f := 4 { fiberlength }      ！光纤长度 5[0 O'%$  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 )M6w5g  
r_co := 6 um { coreradius }                ！纤芯半径 #]nx!*JNZ  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 i;LXu%3\  
OQW#a[=WQ  
; Parameters of thechannels:                ！定义光信道 ?7<JQh)"e  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm S;$-''o?9  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 mEw ~yOW]M  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W t2,A@2DU 2  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um 3;S, 3  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 ~0beuK&p  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 .pvi!NnL-  
Zt.'K(]2h  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm oD<kMK  
w_s := 7 um                          ！信号光的半径 WI?oSE w  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 f7m%|v!  
loss_s := 0                            ！信号光寄生损耗为0 X!e[GJ  
'nXl>  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 Z ?wU  
]IoUwgpI)  
; 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 su*'d:L  
calc UK<Nj<-'t  
  begin g !rQ4#4  
    global allow all;                   ！声明全局变量 /YZr~|65  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 c-B cA  
    add_ring(r_co, N_Tm); $0 vb^  
    def_ionsystem();              ！光谱数据函数 eeyHy"@  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 !o:f$6EA~C  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 {phNds%  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 28 ?\  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 :A/d to  
    finish_fiber();                                   mV3cp rRqv  
  end; S:h{2{  
:]\([Q+a  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 9I&xfvD,  
show "Outputpowers:"                                   ！输出字符串Output powers： d3D] k,  
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） +j< p \Kn>  
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） wK?vPS  
r>o63Q:  
5`~PR :dN  
; ------------- HMSO=)@+  
diagram 1:                   !输出图表1 L7dd(^  
vX/T3WV  
"Powers vs.Position"          ！图表名称 LDPUD'  
3yVMXK  
x: 0, L_f                      ！命令x: 定义x坐标范围 <sBbT `  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 G3Z)Z) N  
y: 0, 15                      ！命令y: 定义y坐标范围 &5yV xL:  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 )h7<?@wv&  
frame          ！frame改变坐标系的设置 s.$3j$vT 8  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） jYk&/@`Ly  
hx             ！平行于x方向网格 |olA9mp|]  
hy              ！平行于y方向网格 <0Xf9a8>  
5>[u `  
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 Ff)8Q.m  
  color = red,  ！图形颜色 1*\o.  
  width = 3,   ！width线条宽度 $g> IyT[  
  "pump"       ！相应的文本字符串标签 MN\HDKN  
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 .(K)?r-g5  
  color = blue,     t'n pG}`tE  
  width = 3, nLXlU*ES  
  "fw signal" LRL,m_gt  
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 hgPa6Kd  
  color = blue, pR=@S>!|  
  style = fdashed, ].-1v5  
  width = 3, IxY|>5z  
  "bw signal" !|^|,"A)  
UtoT  
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 B3 8]~'8  
  yscale = 2,            ！第二个y轴的缩放比例 %)1y AdG 8  
  color = magenta, ~%&LTX0s|  
  width = 3, 8\+uec]k  
  style = fdashed, G<65H+)M\  
  "n2 (%, right scale)" (A9Fhun  
*4\:8  
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 xF!,IKlBBp  
  yscale = 2, LBYMCY  
  color = red, +r2+X:#~T  
  width = 3, :CG`t?N9M  
  style = fdashed, h4fJvOk|!  
  "n3 (%, right scale)" E(>=rD/+  
,Vc6Gwm  
BC^ :=  
; ------------- 9ijfRqI=x  
diagram 2:                    ！输出图表2 J,'M4O\S  
<cps2*'  
"Variation ofthe Pump Power" 8\&X2[oAD  
<? q?Mn  
x: 0, 10 Cio 1E-4  
"pump inputpower (W)", @x IaSR;/  
y: 0, 10 D+lAhEN  
y2: 0, 100 UXJ eAE-  
frame }bb;~  
hx L +b6!2O,  
hy (S>C#A=E\  
legpos 150, 150 G/)O@Ugp  
n@<YI  
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 XWBA^|-N  
  step = 5, `V}q-Zdy  
  color = blue, ?+))}J5N\  
  width = 3, T6\[iJI|  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 h0g8*HY+}  
  finish set_P_in(pump, P_pump_in) Wf+cDpK  
.]8ZwAs=&  
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 hNC&T`.-~B  
  yscale = 2, zO-z%y  
  step = 5, /CrSu  
  color = magenta, 5AFJC?   
  width = 3, "Wct({n  
  "population of level 2 (%, rightscale)", (~p< P+  
  finish set_P_in(pump, P_pump_in) R$R *'l  
\j$&DCv   
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 Y`~Ut:fZ  
  yscale = 2, '{cIAw/"n  
  step = 5, S\CCrje  
  color = red, /:cd\A}  
  width = 3, A#e%^{q$  
  "population of level 3 (%, rightscale)", wW Lj?;bx  
  finish set_P_in(pump, P_pump_in) #|uCgdi  
\[;0 KV_  
/ixp&Z|7  
; ------------- ^ gdaa>L  
diagram 3:                         ！输出图表3 0Um2DjTCG  
^}RCoE  
"Variation ofthe Fiber Length" /T"+KU*  
z<MsKD0Q  
x: 0.1, 5 p?02C# p  
"fiber length(m)", @x 34f?6K1c  
y: 0, 10 $zUP?Gq!  
"opticalpowers (W)", @y &sl0W-;0  
frame f[]dfLS"W  
hx Sh/08+@+L:  
hy x'8x   
 {y)=eX9  
f: (set_L(x);P_out(signal_fw)),     ！改变光纤长度对信号光输出功率的影响 Fn wJ+GTu  
  step = 20,             Ugr!"Q#M  
  color = blue, B`EJb71^Xy  
  width = 3, ?al'F  q  
  "signal output"  4j*  
kXViWOXU^  
;f: (set_L(x);P_out(pump)),                     ！改变光纤长度对泵浦信号输出功率的影响 QFA8N  
   step = 20, color = red, width = 3,"residual pump" q v-8)MSr  
pJ>P[  
! set_L(L_f) {restore the original fiber length } 49eD1h3'X[  
 \__i  
%:i7s-0w  
; ------------- +V2F#fI/  
diagram 4:                                  ！输出图表4 (|2t#'m  
]>!K3kB  
"TransverseProfiles" xH ]Ct~ md  
RTYvS5 G  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) HVRZ[Y<^  
[DuttFX^x  
x: 0, 1.4 * r_co /um -oGdk|Yn  
"radialposition (µm)", @x [z:!j$K  
y: 0, 1.2 * I_max *cm^2 x5pdS:  
"intensity (W/ cm&sup2;)", @y j/DzCcp7  
y2: 0, 1.3 * N_Tm ;[ZEDF5H  
frame @@f"%2ZR[  
hx {FI&^39 F$  
hy 0S"mVZ*P  
KR} ?H#%  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 /'SNw?&  
  yscale = 2, 3<Lx&p~%T  
  color = gray, jRa43ck  
  width = 3, 7g^]:3f!   
  maxconnect = 1, !aUs>1i  
  "N_dop (right scale)" gt) I(  
.xCZ1|+gG  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 -OV&Md:~  
  color = red, G/E+L-N#`  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 "Bkfoi  
  width = 3, +|3@=.V  
  "pump"  m!!/Za  
w7L{_aom  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 )$2QZ qX  
  color = blue, -_g0C^:<,  
  maxconnect = 1, iI T;K@&  
  width = 3, '@v\{ l  
  "signal" #~]zhHI  
Fe*R  
!)f\%lb  
; ------------- `7E;VL^Y1  
diagram 5:                                  ！输出图表5 , >a&"V^k  
"Fr.fhh'~  
"TransitionCross-sections" bL`TySX  
kt#fMd$  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) [>I<#_^~  
(XTG8W sN  
x: 1450, 2050 >Er|Jxy  
"wavelength(nm)", @x ELoDd&d8  
y: 0, 0.6 z _$%-6  
"cross-sections(1e-24 m&sup2;)", @y $S6`}3  
frame dl)Y'DI  
hx r8?gD&c}  
hy -m zIT4  
N{!i=A  
f: s12_Tm(x * nm) /1e-24,      ！Tm3+吸收截面与波长的关系 P= BZ+6DS  
  color = red, KfEx"94  
  width = 3, ,<_A2t 2  
  "absorption" e(&v"}Ef`  
f: s21_Tm(x * nm) /1e-24,  ！Tm3+发射截面与波长的关系 QO:!p5^:  
  color = blue, 1s&zMWC  
  width = 3, ) w5SUb  
  "emission" R_cA:3qc~  
tKuwpT1Qc  
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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