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

(* @FNaCmBX  
Demo for program"RP Fiber Power": thulium-doped fiber laser, # <?igtUO  
pumped at 790 nm. Across-relaxation process allows for efficient f%,Vplb  
population of theupper laser level. Y5mQY5u|  
*)            ！（*  *）注释语句 ov3FKMG?  
}xx"  
diagram shown: 1,2,3,4,5  ！指定输出图表 T'^ Do/  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 1R-1#<a>&  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 8NF93tqD6  
; 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 q\DN8IJ  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 -G'U\EXT  
; 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 zG\& ZU  
,r5'nDV=d  
include"Units.inc"         ！读取“Units.inc”文件中内容 7!qO*r  
^uiQZ%;  
include"Tm-silicate.inc"    ！读取光谱数据
c/6  
isBtJ7\Sc  
; Basic fiberparameters:    ！定义基本光纤参数 xF8U )j!  
L_f := 4 { fiberlength }      ！光纤长度 9ZJn 8ki  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 )tvP|
 
r_co := 6 um { coreradius }                ！纤芯半径 ZA1:Y{V  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 :QoW*Gs1  
q"@>rU4  
; Parameters of thechannels:                ！定义光信道 : Iq  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm ~:JoKm`vU  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 @> |3d  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W J#'8]p3E  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um @k-C>h()C  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 +,Ud 3iS  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 W(jOD,QM
B  
fzdWM:g  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm ""f'L,`{.  
w_s := 7 um                          ！信号光的半径 c80Ffq  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 MD):g@  
loss_s := 0                            ！信号光寄生损耗为0 !qu/m B
 
+^<s'  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 Te6cw+6  
B7QRG0  
; 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 56?RFnZ&j  
calc eF"k"Ckt'  
  begin BHu%x|d  
    global allow all;                   ！声明全局变量 ~tc,p  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 1j*E/L  
    add_ring(r_co, N_Tm); C+L_f_6]  
    def_ionsystem();              ！光谱数据函数 '" 4;;(  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 eH_< <Xh!v  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 29HyeLB@  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 OZR{+YrB^  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 ,W|cyQ  
    finish_fiber();                                   |yinVfZ0C  
  end; `N}aV
Ns  
m9=93W?   
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 $'x#rW>v  
show "Outputpowers:"                                   ！输出字符串Output powers： F{G.dXZZ<  
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） +;ylld  
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） M<nH  
*e25!#o1  
8|{d1dy  
; ------------- vlqL  
diagram 1:                   !输出图表1 l3xI\{jn  
:+_  
"Powers vs.Position"          ！图表名称 ~f:"Q(f+  
2b/Cs#-  
x: 0, L_f                      ！命令x: 定义x坐标范围 hLr\;Swyp  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 udOdXz6K?  
y: 0, 15                      ！命令y: 定义y坐标范围 {O6yJckH  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 Ys0N+  
frame          ！frame改变坐标系的设置 x#XxD<y  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） OWc~=Cr  
hx             ！平行于x方向网格 [Y4Wm?  
hy              ！平行于y方向网格 gW-mXb  
LP'wL6#  
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
050V-S>s  
  color = red,  ！图形颜色 ?_7iL?  
  width = 3,   ！width线条宽度 aH_0EBR
c  
  "pump"       ！相应的文本字符串标签 $H`{wJ?2(  
f: P(signal_fw, x),  ！P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 N;v]ypak  
  color = blue,     {kghZur  
  width = 3, #}HdylI\}  
  "fw signal" w! PguP  
f: P(signal_bw, x),   ！P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 ?IG[W+M8  
  color = blue, ,u=+%6b)A  
  style = fdashed, q?qH7={,eu  
  width = 3, "QvTn=  
  "bw signal" :O7n*l
wx  
P  Ij  
f: 100 * n(x, 2),    ！n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 uD?Rs`  
  yscale = 2,            ！第二个y轴的缩放比例 Q*hXFayx  
  color = magenta, ,h9?o  
  width = 3, DP-0,Gt&Xj  
  style = fdashed, 7h.fT`  
  "n2 (%, right scale)" +{#L,0t  
7GvMKtuSK  
f: 100 * n(x, 3),          ！n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比 p<<dj%  
  yscale = 2, ]v]tBVO$  
  color = red, c#f@v45  
  width = 3, cua( w  
  style = fdashed, lPD&Doa  
  "n3 (%, right scale)" a2[r
Y  
B3<sSe8L0  
e$Mvl=NYp\  
; ------------- T!I3.  
diagram 2:                    ！输出图表2 xE{slDl  
-Iis/Xw:  
"Variation ofthe Pump Power" F'-XAI <3  
TPs ]n7]:  
x: 0, 10 iuA_Jr  
"pump inputpower (W)", @x k?rJGc G  
y: 0, 10 CDPu(,^  
y2: 0, 100 os7xwI;T  
frame ~6K.5t7  
hx M?AKJE j5  
hy 1IlOU|
4  
legpos 150, 150 eL<jA9cJ9  
!b=W>5h  
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 X:lStO#5  
  step = 5, dai+"  
  color = blue, _Ie
:!q  
  width = 3,  d0i|^  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 nwMq~I*1  
  finish set_P_in(pump, P_pump_in) S>)[n]f  
+&dkJ 4g[  
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 ddN G:  
  yscale = 2, do*aE  
  step = 5, :[CEHRc7x  
  color = magenta, h#c7v!g  
  width = 3, Uu52uR  
  "population of level 2 (%, rightscale)", 'tDUPm38  
  finish set_P_in(pump, P_pump_in) f7|Tp
m  
. :>e"D  
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 &po!X )  
  yscale = 2, Pf/8tXs}  
  step = 5, ]G D` f  
  color = red, )Ay90Wt  
  width = 3, 1J72*`4OK  
  "population of level 3 (%, rightscale)", I~6 o<HO  
  finish set_P_in(pump, P_pump_in) !{{gL=_@  
6`vW4]zu  
X# /c7w-  
; ------------- mYj)![  
diagram 3:                         ！输出图表3 T--%UZD]W  
\*Yr&Lm  
"Variation ofthe Fiber Length" Pjn{3/*wi  
nt+OaXe5D  
x: 0.1, 5 i(OeE"YA  
"fiber length(m)", @x oam;hmw  
y: 0, 10 qGX#(,E9;  
"opticalpowers (W)", @y ZzjCS2U  
frame 2gZ nrU  
hx gWoUE7.3`  
hy OScqf]H  
.ANR|G  
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 !%D';wQ,/  
  step = 20,             "<{|ni}  
  color = blue, rmo\UCD  
  width = 3, I{r*Y9  
  "signal output" {~uTi>U  
fm`
V2'Rm  
;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 qTN%9!0@9  
   step = 20, color = red, width = 3,"residual pump" qv}ECQ  
HsUh5;  
! set_L(L_f) {restore the original fiber length } .}v" `>x  
? dHl'  
7Xu#|k  
; ------------- {=?(v`88  
diagram 4:                                  ！输出图表4 AFm9"mQrw  
vV*J;%MO  
"TransverseProfiles" P"l'? `  
P.5l9Ns(O  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) =4co$oD}  
1kw*Q:  
x: 0, 1.4 * r_co /um xY#J((-iH  
"radialposition (µm)", @x (XW'1@b  
y: 0, 1.2 * I_max *cm^2 @fJsRWvGq  
"intensity (W/ cm&sup2;)", @y VgOD
v  
y2: 0, 1.3 * N_Tm G_J}^B*?%v  
frame DU$
#tg}{  
hx <n06(9BF  
hy fZ5 UFq_~s  
Su"Z3gm5Kw  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 H@Ot77(*  
  yscale = 2, Ie!&FQe2q  
  color = gray, W dD889\  
  width = 3, #IZh}*$  
  maxconnect = 1, lFnYQab  
  "N_dop (right scale)" !5C"`@}q>  
<<CWN(hQWO  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 t@9-LYbL  
  color = red, & ]]l0B  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 P1T{5u!T  
  width = 3, Wm`*IBWA  
  "pump" T|wz%P<J  
J sz=5`  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 =>`zk^  
  color = blue, v-d"dC`  
  maxconnect = 1, !ess.U&m'  
  width = 3, 3CjixXaA$  
  "signal" RuIBOo\XL7  
~M-L+X
Zl(  
9N'fU),I  
; ------------- h!%y,4IBR  
diagram 5:                                  ！输出图表5 2#R$-*;#  
6>rz=yAM_  
"TransitionCross-sections" n}IGxum8`  
>Ti%Th,  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) BJWlx*U]  
; Z7!BU  
x: 1450, 2050 &RARK8^  
"wavelength(nm)", @x 8IRKCuV  
y: 0, 0.6 X"+p=PGZK  
"cross-sections(1e-24 m&sup2;)", @y qz]qG=wmL  
frame U\H[.qY-  
hx IRx%L?  
hy 'QG`^@Z  
6,q_M(;c  
f: s12_Tm(x * nm) /1e-24,      ！Tm³⁺吸收截面与波长的关系 ,o%by5j"^N  
  color = red, &d2L9kTk  
  width = 3, x0JW  
  "absorption" aYT!xdCI  
f: s21_Tm(x * nm) /1e-24,  ！Tm³⁺发射截面与波长的关系 7uL.=th'  
  color = blue, 5)T[ha77u  
  width = 3, SDO:Gma  
  "emission" $&Vba@v  
^C~Ryw7  

感谢，视频上有点看不清楚