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

(* eAR]~ NiW  
Demo for program"RP Fiber Power": thulium-doped fiber laser, /2Q@M>  
pumped at 790 nm. Across-relaxation process allows for efficient xO"fg9a  
population of theupper laser level. P0WI QG+  
*)            ！（*  *）注释语句 c~bi ~ f  
sJu^deX  
diagram shown: 1,2,3,4,5  ！指定输出图表 /V}>v
  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 ^o^[p %  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 R%B"Gtl)  
; 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 No#1Ikw  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 XG2&_u&  
; 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 Y?G\@6  
B@XnHh5y  
include"Units.inc"         ！读取“Units.inc”文件中内容 UZ#Yd|'PD  
z=C'qF`  
include"Tm-silicate.inc"    ！读取光谱数据 S?_/Po|  
z9OhY]PPF  
; Basic fiberparameters:    ！定义基本光纤参数 Q[?O+  
L_f := 4 { fiberlength }      ！光纤长度 NGZEUtj  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 K8xwPoRL  
r_co := 6 um { coreradius }                ！纤芯半径 A<-Prvryt  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 7 $AEh+f  
L7oLV?k  
; Parameters of thechannels:                ！定义光信道 CZaUrr  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm aBv3vSq>Q  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 1haNca_6,  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W mqxgrb7  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um ZuF"GNUC  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 bV|(V>  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 ]*b}^PQM^  
,9jq @_  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm e`gOc*  
w_s := 7 um                          ！信号光的半径 S ykblP37  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 )c~1
s  
loss_s := 0                            ！信号光寄生损耗为0 rz/^_dV  
8/lv,m#  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 9gFb=&1k  
F-K=Otj  
; Function for defining themodel:   ！定义模型函数，一定要有calc命令，否则函数只会被定义，但不会被执行 iEd%8 F h  
calc 2p'ujAK  
  begin {c5%.<O  
    global allow all;                   ！声明全局变量 #m 2Ss  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 i"|="O0v5  
    add_ring(r_co, N_Tm); Z(g9rz']0  
    def_ionsystem();              ！光谱数据函数 zdY+?s)p  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 [X>\!mt  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 9v[cy`\  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 N$u;Q(^  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 llG^+*Y8t  
    finish_fiber();                                   FCO5SX#-g  
  end; Vf?+->-?{  
XP#j9CF#.  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出
Om #m":  
show "Outputpowers:"                                   ！输出字符串Output powers： o#(z*v@  
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） <?|v-(E  
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） }*vUOQQp*  
0Vu&UD  
\;w$"@9  
; ------------- ) xRm  
diagram 1:                   !输出图表1 &n:3n  
NyHHK8>  
"Powers vs.Position"          ！图表名称 jET$wKw%  
"r@f&Ssxb  
x: 0, L_f                      ！命令x: 定义x坐标范围 8S;]]*cD~  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 &=bWXNU.  
y: 0, 15                      ！命令y: 定义y坐标范围 G)qNu}  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 xDRNtLj<u  
frame          ！frame改变坐标系的设置 B^4D`0G[4  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） ,SEC~)L  
hx             ！平行于x方向网格 $|0_[~0-n  
hy              ！平行于y方向网格 <PBrW#:'  
3&*_5<t\X  
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 Z+jgFl 4  
  color = red,  ！图形颜色 ^a9v5hu  
  width = 3,   ！width线条宽度 'EsN{.l?  
  "pump"       ！相应的文本字符串标签 %<^B\|d'?  
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 UsT+o  
  color = blue,     H
)XHlO^  
  width = 3, f-at@C1L%L  
  "fw signal" | CNsa  
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 {/f\lS.5g  
  color = blue, AiUICf?{  
  style = fdashed, r >%reS  
  width = 3, wSrq?U5q  
  "bw signal" "S$4pj`<  
8;'fWV? U  
f: 100 * n(x, 2),    ！n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 dV{N,;z  
  yscale = 2,            ！第二个y轴的缩放比例 " oWiQ{\IP  
  color = magenta, O0`k6$=6r  
  width = 3, "wk~[>  
  style = fdashed, P38D-fLq  
  "n2 (%, right scale)" ?NazfK  
ts2;?`~  
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 BIx Z4Ft  
  yscale = 2, $@8$_g|Wz  
  color = red, eBZ^YY<*g  
  width = 3, B?}ZAw>  
  style = fdashed, ^QX3p,Y  
  "n3 (%, right scale)" UNc!6Q-.  
GyE-fB4C  
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; ------------- =M]f
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diagram 2:                    ！输出图表2 4AI\'M"d  
C %l!"s^  
"Variation ofthe Pump Power" ]?<j]u0J  
rh;@|/<l  
x: 0, 10 |T53m;D  
"pump inputpower (W)", @x 6
#NptXB  
y: 0, 10 kYxb@Zn=|  
y2: 0, 100 qPgLSZv  
frame FB<#N+L\  
hx [UJC/GtjS  
hy -Fcg}\9  
legpos 150, 150 W_z2Fs"A  
2FHWOy /N@  
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 #q2cVN1  
  step = 5, n-q  
  color = blue, MPt:bf#  
  width = 3, INQ0h`T  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 Vc!` BiH  
  finish set_P_in(pump, P_pump_in) `N0Mm7  
|RUx)&  
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 u!in>]^  
  yscale = 2, oObm5e*Z  
  step = 5, vfG4PJ 6  
  color = magenta, ]<z4p'F1%  
  width = 3, /I2RU2|B  
  "population of level 2 (%, rightscale)", 1i;-mYGaMn  
  finish set_P_in(pump, P_pump_in) <I.anIB:U  
N 3IF j  
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 RhM]OJd'  
  yscale = 2, #*^vd{fl  
  step = 5, a`.]
8Jy)  
  color = red, y~)rZ-eSB  
  width = 3, L(tA~Z"k  
  "population of level 3 (%, rightscale)", _is<.&f6  
  finish set_P_in(pump, P_pump_in) nZ?BCO  
M{Ss?G4H  
vywd&7gK  
; ------------- # 4E@y<l$  
diagram 3:                         ！输出图表3 Z5aU7  
5m,{?M`  
"Variation ofthe Fiber Length" y74Ph:^k  
Y40Hcc+Fx  
x: 0.1, 5 <1tFwC|4BJ  
"fiber length(m)", @x -^=sxi,V  
y: 0, 10 8D[8(5  
"opticalpowers (W)", @y ZM oV!lu  
frame rM6^pzxe  
hx /s.O3x._'  
hy ..yuEA  
*@'4 A :A  
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 XGE:ZVpW  
  step = 20,             M7"I]$|\  
  color = blue, =|IB=  
  width = 3, k$</7IuH  
  "signal output" 'LZF^m _<<  
y=y=W5#;77  
;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 \tFg10  
   step = 20, color = red, width = 3,"residual pump" %MyA;{-F6  
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! set_L(L_f) {restore the original fiber length } a' "4:(L  
UkrqHHpy  

;2"#X2B  
; ------------- YH33E~f  
diagram 4:                                  ！输出图表4 EL+6u>\-k  
loVUB'OSv  
"TransverseProfiles" ?c)PBJ+]  
XHuY'\;-  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) Z&W|O>QTl  
=G9%Hz5~:  
x: 0, 1.4 * r_co /um bX#IE[Yp}  
"radialposition (µm)", @x ,)mqd2)+"  
y: 0, 1.2 * I_max *cm^2 P 3uAS  
"intensity (W/ cm&sup2;)", @y BcaMeb-Z  
y2: 0, 1.3 * N_Tm +5Z0-N@  
frame v)@EK6Nty  
hx 4,L(  
hy /G$8j$  
0T2h3,  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 gwk$|aT@  
  yscale = 2, $Z)Dvy|  
  color = gray, c;_GZ}8  
  width = 3, .J' 8d"+  
  maxconnect = 1, |+Z, 7~!  
  "N_dop (right scale)" /0QGU4=  
fq/F|c  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 =jdO2MgSg*  
  color = red, f!;i$Oif  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 rDkAeX0  
  width = 3, vlCjh! x  
  "pump" d;&'uiS  
5VIpA  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 A0.)=q  
  color = blue, ty]JUvR@  
  maxconnect = 1, {= Dtajz  
  width = 3, !!&H'XEJV  
  "signal" xkR--/f  
H=]$9ZH!  
E",s]  
; ------------- _3<J!$]&p  
diagram 5:                                  ！输出图表5 ey<u  
:T3I"  
"TransitionCross-sections" G1M}g8 ]h  
[0CoQ5:d?&  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) %Qc#v$;+J  
}xTTz,Oj$  
x: 1450, 2050 !\Jj}iX3_  
"wavelength(nm)", @x tr"iluwGc  
y: 0, 0.6 T/G1v;]  
"cross-sections(1e-24 m&sup2;)", @y Z"Z&X0Oj  
frame 1\q(xka{  
hx XOzPi*V**  
hy 5sC{5LJzC  
x!bFbi#!"  
f: s12_Tm(x * nm) /1e-24,      ！Tm³⁺吸收截面与波长的关系 +U&aK dQs  
  color = red, uRG0}>]|U  
  width = 3, (:E_m|00;  
  "absorption" F.c`0u;=  
f: s21_Tm(x * nm) /1e-24,  ！Tm³⁺发射截面与波长的关系 qgrRH
'  
  color = blue, +<6L>ZAL  
  width = 3, )hj77~{+  
  "emission" I z~#G6]M  
e8gJ }8Fj  

感谢，视频上有点看不清楚