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

(* mv_-|N~  
Demo for program"RP Fiber Power": thulium-doped fiber laser, c_i;'  
pumped at 790 nm. Across-relaxation process allows for efficient /nNHI34  
population of theupper laser level. sTONkd  
*)            ！（*  *）注释语句 ?UzHQr  
7UiU3SUcg  
diagram shown: 1,2,3,4,5  ！指定输出图表 ;
F-kE4w  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 >{[J+f{~|  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 d
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; 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 Cq=c'(cX  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 5;+Bl@zGu  
; 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 4?cg6WJ'6  
@,hvXl-G*  
include"Units.inc"         ！读取“Units.inc”文件中内容 2epL!j)Wh  
&^"m6  
include"Tm-silicate.inc"    ！读取光谱数据 (]L=$u4  
p
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; Basic fiberparameters:    ！定义基本光纤参数 J5-^@JYK  
L_f := 4 { fiberlength }      ！光纤长度 B7 T+a  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 xK f+.6 wz  
r_co := 6 um { coreradius }                ！纤芯半径 8GX@76o  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 !Wk "a7  
b@k3y9&  
; Parameters of thechannels:                ！定义光信道 "xKJ?8   
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm p("do1:  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 {|50&]m  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W o{/D:B  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um :'03*A_[  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 =619+[fK  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 gBN;j  
vU_#(jZ  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm I#0$5a},u^  
w_s := 7 um                          ！信号光的半径 3Dy.mtP  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 3s+D x$Ud  
loss_s := 0                            ！信号光寄生损耗为0 SExd-=G  
}\B6d\k  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率
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|o`TRqs  
; 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 SI\zW[IL  
calc +'l@t bP  
  begin Ha<(~qf  
    global allow all;                   ！声明全局变量 #u>JCPz  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 6<2 7}S  
    add_ring(r_co, N_Tm); y37@4p^@9  
    def_ionsystem();              ！光谱数据函数 2Tp.S3  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 0@>3fR  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 IP-mo!Y.  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 FXIQS'  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 Pm-@ZZ~  
    finish_fiber();                                   <X:7$v6T|  
  end; { Uh/ ~zu  
r__uPyIMG/  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 [/I4Pe1Yj%  
show "Outputpowers:"                                   ！输出字符串Output powers： MD&Ebq5V  
show"pump:     ", P_out(pump):d3:"W"  ！输出字符串pump：和计算值（格式为3个有效数字，单位W） <~]s+"oVc  
show"signal:   ",P_out(signal_fw):d3:"W" ！输出字符串signal：和计算值（格式为3个有效数字，单位W） {epsiHK@tK  
\D0Pik@?  
P*_Q8I)Y  
; ------------- \'shnzs  
diagram 1:                   !输出图表1 0nC%tCV'  
P66>w})@  
"Powers vs.Position"          ！图表名称 /P320[B}m&  
{'JoVJKv  
x: 0, L_f                      ！命令x: 定义x坐标范围 mN,Od?q[  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 Q\}5q3  
y: 0, 15                      ！命令y: 定义y坐标范围 Vg0Rc t  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 zXB.)4T  
frame          ！frame改变坐标系的设置 rB-&'#3%  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） 'z@(,5  
hx             ！平行于x方向网格 2\_}81hM  
hy              ！平行于y方向网格 , j7&(V~  
EP*"=_  
f: P(pump, x),    ！命令f: 定义函数图；P(pump, x)函数是计算x位置处的泵浦光功率 +as(m  
  color = red,  ！图形颜色 *?cE]U6;  
  width = 3,   ！width线条宽度 Fq:BRgCE  
  "pump"       ！相应的文本字符串标签 @xR=bWY  
f: P(signal_fw, x),  ！P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 M,zUg_@  
  color = blue,     b8(94t|;U  
  width = 3, W2s6!_AN  
  "fw signal" SD |5v*  
f: P(signal_bw, x),   ！P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 K.B!-<  
  color = blue, aVEg%8  
  style = fdashed, U2seD5I  
  width = 3, }<m9w\pA  
  "bw signal" rz5AIe>Hm  
\G:\36l  
f: 100 * n(x, 2),    ！n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 *Mk5*_  
  yscale = 2,            ！第二个y轴的缩放比例 s"s^rC  
  color = magenta, MqRpG5 .  
  width = 3, T|[zk.8=E  
  style = fdashed, zyTeF~_  
  "n2 (%, right scale)" yal
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/3{jeU.k  
f: 100 * n(x, 3),          ！n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比 cyL"?vR*<  
  yscale = 2, Yv\>\?865  
  color = red, eh`n?C  
  width = 3, Tc$Jvy-G4A  
  style = fdashed, \b6H4aQii  
  "n3 (%, right scale)" k"7l\;N  
A&XI1. j6  
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; ------------- 9mZ[SQf  
diagram 2:                    ！输出图表2 ,t2Mur  
~qekM>z  
"Variation ofthe Pump Power" 0ZcvpR?G  
1ayL*
tr  
x: 0, 10 2[zFKK  
"pump inputpower (W)", @x :(ni/,~Q  
y: 0, 10 p,0J $L  
y2: 0, 100 cgY+xd@  
frame O!xul$9  
hx EbXWCD  
hy H}vq2|MN  
legpos 150, 150 GI']&{  
u4hC/!  
f: (set_P_in(pump, x);P_out(signal_fw)), ！set_P_in(pump,x)改变泵浦信道功率；P_out(signal_fw)输出前向信号光 VEFUj&t;xW  
  step = 5, "h58I)O  
  color = blue, l7vU{Fd-h^  
  width = 3, .d/e?H:  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 (@X].oM^y  
  finish set_P_in(pump, P_pump_in) _=$:<wIE[  
?y"=jn  
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 IHC {2 ^  
  yscale = 2, @,kR<1  
  step = 5, &-.NkW@  
  color = magenta, [ H|ifi  
  width = 3, U}h
QVpP#  
  "population of level 2 (%, rightscale)", Ry_"sow4  
  finish set_P_in(pump, P_pump_in)
n06T6oc  
tg5G`P5PJ  
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 3Q;XvrGA  
  yscale = 2, ~!//|q^J]  
  step = 5, xQA6!j  
  color = red, T*pcS'?'  
  width = 3, S1SsJo2\  
  "population of level 3 (%, rightscale)", NRIp@PIF:"  
  finish set_P_in(pump, P_pump_in) [cfKvROG  
W[BwHNxyg  
h=*eOxR"4^  
; ------------- }LYK:?_/  
diagram 3:                         ！输出图表3 'j&+Pg)@  
mqrV:3}  
"Variation ofthe Fiber Length" k z{_H`5.  
D^dos`L0b  
x: 0.1, 5 R-[t4BHn  
"fiber length(m)", @x Fx!NRY_  
y: 0, 10 X7."hGu@  
"opticalpowers (W)", @y $*-U
Y  
frame &GKtD)  
hx A*x3O%zH  
hy Ng,<4;  
HuB\92u  
f: (set_L(x);P_out(signal_fw)),     ！改变光纤长度对信号光输出功率的影响 N Ftmus  
  step = 20,             "Qci+Qq  
  color = blue, rP%B#%;S"  
  width = 3, Tup2;\y  
  "signal output"
nGoQwKIW  
md S`nhb  
;f: (set_L(x);P_out(pump)),                     ！改变光纤长度对泵浦信号输出功率的影响 +5<]s+4T  
   step = 20, color = red, width = 3,"residual pump" )\3 RR.p  
|K(jXZ)  
! set_L(L_f) {restore the original fiber length } f?Am)  
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dsrKHi  
; ------------- =CqZ$  
diagram 4:                                  ！输出图表4 =wcqCW,]  
q\uzmOh  
"TransverseProfiles" N0mP EF2  
wbImE;-Z  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) 9$Dsm@tX  
42B_8SK  
x: 0, 1.4 * r_co /um %D_pTD\  
"radialposition (µm)", @x (^lw<$N  
y: 0, 1.2 * I_max *cm^2 U#U'iPy  
"intensity (W/ cm&sup2;)", @y /\-iV)h1@  
y2: 0, 1.3 * N_Tm ;)7GdR^K  
frame V7}3H2]^  
hx ~E^lKe  
hy ;}W-9=81  
31-:xUIX  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 D-KQRe2@  
  yscale = 2, Ms61FmA4  
  color = gray, Y(U+s\X  
  width = 3, ?7k%4~H t  
  maxconnect = 1, OL0W'C9oA  
  "N_dop (right scale)" 77?D ~N[  
S9VD/  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 "I}]]?y  
  color = red, |G(9mnZ1  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 >0c4C<_  
  width = 3, vw5f|Q92  
  "pump" NW%u#MZ[h  
Nk ~"f5q7  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 V'Z Z4og  
  color = blue, 9snc *<  
  maxconnect = 1, bd& /B&a  
  width = 3, sgxD5xj}4  
  "signal" [OU[i(,{  
<n|ayxA)  
!ma%Zk  
; ------------- ;D>*Pzj  
diagram 5:                                  ！输出图表5 Tj3xK%K_r3  
G\4*6iw:  
"TransitionCross-sections" ^6kE tTO*  
qh)10*FB  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) pf@H;QS`  
Bkaupvv9S  
x: 1450, 2050 WETnrA"N  
"wavelength(nm)", @x \LbBK ~l-I  
y: 0, 0.6 oEN^O:9e  
"cross-sections(1e-24 m&sup2;)", @y Jb1L[sT2  
frame c7R<5f  
hx tQYkH$e`/{  
hy e]Q bC"  
fFiFS\''V  
f: s12_Tm(x * nm) /1e-24,      ！Tm³⁺吸收截面与波长的关系 XcH_Y  
  color = red, [!'fE#"a  
  width = 3, ,)beK*Iw  
  "absorption" )&pcRFl  
f: s21_Tm(x * nm) /1e-24,  ！Tm³⁺发射截面与波长的关系 8H7=vk+  
  color = blue, /UP1*L  
  width = 3, *%p`Jk-U  
  "emission" Z^_-LX:%  
\YMe&[C:o  

感谢，视频上有点看不清楚