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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

(* }d&_q7L@@6  
Demo for program"RP Fiber Power": thulium-doped fiber laser, Mxe}B'  
pumped at 790 nm. Across-relaxation process allows for efficient g@rb  
population of theupper laser level. YT8vP~  
*)            ！（*  *）注释语句 ?u-|>N>  
yQU_>_!n  
diagram shown: 1,2,3,4,5  ！指定输出图表 (XeE2l2M  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 PjZvQ\Z  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 t'VV>;-RO=  
; 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 rw: c  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 K:!"+q  
; 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 } uO);k5H  
AZ0;3<FfLp  
include"Units.inc"         ！读取“Units.inc”文件中内容 MTsM]o  
>go,K{cK6  
include"Tm-silicate.inc"    ！读取光谱数据 "k/;[ Wt]  
`rgn<I"  
; Basic fiberparameters:    ！定义基本光纤参数 H#NCi~M>3  
L_f := 4 { fiberlength }      ！光纤长度 ?sab*$wG  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 esHg'8?U  
r_co := 6 um { coreradius }                ！纤芯半径 l%[EXZ  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 'L 8n-TyL  
[ OM7g'?S0  
; Parameters of thechannels:                ！定义光信道 ? K ;dp  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm GO8GJ;B-U  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 H#@^R(  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W M%Ji0v38  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um @$lG@I,[  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 >XK PTC5H  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0  ;hY S6  
m4aB*6<lq  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm ~T9/#-e>BF  
w_s := 7 um                          ！信号光的半径 /h+8A' ,  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 J]v%q,"  
loss_s := 0                            ！信号光寄生损耗为0 8WtsKOno  
W=vG$  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 &f"-d  
{ D^{[I  
; 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 DSC$i|  
calc ;-9=RI0  
  begin 8C[C{qOJ  
    global allow all;                   ！声明全局变量 GKOD/,  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数  5V6G=H  
    add_ring(r_co, N_Tm); D&/kCi=R  
    def_ionsystem();              ！光谱数据函数 h?rp|uPQ  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 y<HO:kZ8`  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 ZNf6;%oGG  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 KB%"bqB|  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 _jJPbKz  
    finish_fiber();                                   M*z~gOZ  
  end; !u_Y7i3^  
>ZPsjQuf"  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 0*rQ3Z  
show "Outputpowers:"                                   ！输出字符串Output powers： }2<r,  
show"pump:     ", P_out(pump):d3:"W"  ！输出字符串pump：和计算值（格式为3个有效数字，单位W） afv~r>q(-  
show"signal:   ",P_out(signal_fw):d3:"W" ！输出字符串signal：和计算值（格式为3个有效数字，单位W） )^ m%i]L _  
IOb*GTb  
}R1< 0~g  
; ------------- ERpnuMb  
diagram 1:                   !输出图表1 x97 j  
}!;s.[y  
"Powers vs.Position"          ！图表名称 %1H[Wh(U  
?3*l{[@J  
x: 0, L_f                      ！命令x: 定义x坐标范围 6I1,:nLL<  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 'SCidN(n  
y: 0, 15                      ！命令y: 定义y坐标范围 LO <  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 g6Q!8  
frame          ！frame改变坐标系的设置 qR(\5}  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） N$h{Yvbn  
hx             ！平行于x方向网格 .z 6fv  
hy              ！平行于y方向网格 3D` YZ#M  
9/hrjItV  
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 k%D+Y(WGz8  
  color = red,  ！图形颜色 ?0)&U  
  width = 3,   ！width线条宽度 I2 j}Am  
  "pump"       ！相应的文本字符串标签 2Tfz=7h$  
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 ?mWw@6G,  
  color = blue,     ZkAU17f  
  width = 3, V\u>"3BQw  
  "fw signal" G>wqt@%r9  
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 @c<3b2  
  color = blue, zoOaVV&1  
  style = fdashed, ,_yh z0.  
  width = 3, '<rZm=48  
  "bw signal" (>VX-Y/  
p8Q,@ql.  
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 --HF8_8;'  
  yscale = 2,            ！第二个y轴的缩放比例 p /#$io  
  color = magenta, 11<Qxu$rL  
  width = 3, {.QEc0-  
  style = fdashed, T2SP W@#Z3  
  "n2 (%, right scale)" |_`E1Y}}  
V#cqRE3XNi  
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 U}MXT <6  
  yscale = 2, 5$wpL(:R(  
  color = red, R,F[XI+=N  
  width = 3, u[ L`-zI  
  style = fdashed, *Txl+zTY  
  "n3 (%, right scale)" enp)-nS0  
TQx.KM>y  
ix(=3 /Dgz  
; ------------- <FWF<r3F  
diagram 2:                    ！输出图表2 O)ME"@r@:  
LUC4=kk4   
"Variation ofthe Pump Power" ^1Zeb$Nw'  
9T |IvQK8  
x: 0, 10 blTo5NLX  
"pump inputpower (W)", @x \RvvHty-V  
y: 0, 10 y($%;l   
y2: 0, 100 8"dv_`ym  
frame O [i#9)  
hx S zUpWy&  
hy 0%m)@ukb  
legpos 150, 150 ai nG6Y<O`  
%n hm  
f: (set_P_in(pump, x);P_out(signal_fw)), ！set_P_in(pump,x)改变泵浦信道功率；P_out(signal_fw)输出前向信号光 Bx/L<J@  
  step = 5, _io+YzS  
  color = blue, :{IO=^D=$  
  width = 3, 1jc, Y.mP  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 P?t" jKp'  
  finish set_P_in(pump, P_pump_in) B x (uRj  
SE),":aY  
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 NGOqy+Ty{f  
  yscale = 2, 2I&o69x?  
  step = 5, |!"2fI  
  color = magenta, PB#fP_0C  
  width = 3, q|8{@EMT  
  "population of level 2 (%, rightscale)", 91$]Qg,lB  
  finish set_P_in(pump, P_pump_in) <L`"!~Q  
i K12 pw  
f: (set_P_in(pump,x); 100 * n_av(3)),   ！改变泵浦信号功率对能级3上激活粒子占比的影响 :cGt#d6  
  yscale = 2, P#fM:z@[  
  step = 5, rMUT_^  
  color = red, co9 .wB@  
  width = 3, |7X:TfJ  
  "population of level 3 (%, rightscale)", (rkU)Q  
  finish set_P_in(pump, P_pump_in) e_/b2"{  
>2]JXLq  
 >lBD<;T  
; ------------- fH)YFn/  
diagram 3:                         ！输出图表3 3bDQk :L  
:PtF+{N>  
"Variation ofthe Fiber Length" Clh!gpB c  
Sr%;fq  
x: 0.1, 5 NMww>80  
"fiber length(m)", @x 7c~u=U"  
y: 0, 10 FIbp"~  
"opticalpowers (W)", @y Q",0F{'  
frame [+OnV&  
hx *&d<yJM`b  
hy jK' N((Hz  
\mV'mZ9>  
f: (set_L(x);P_out(signal_fw)),     ！改变光纤长度对信号光输出功率的影响 6$ Gep  
  step = 20,             ^`G`phd$  
  color = blue, ?}m']4p  
  width = 3, 5cEcTJL[C  
  "signal output" wbe<'/X+  
JB>b`W9   
;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 CYKr\DA  
   step = 20, color = red, width = 3,"residual pump" S6fL>'uQ  
'sxNDnGg  
! set_L(L_f) {restore the original fiber length } 1&P<  
>P/][MT  
jaa"~5TO8  
; ------------- 7{xh8#m  
diagram 4:                                  ！输出图表4 &[At`Nw71  
H_0/f8GwnG  
"TransverseProfiles" |U_]vMq  
*b xzCI7b  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) "3<da*D1  
Rcawc Y  
x: 0, 1.4 * r_co /um QjC22lW-  
"radialposition (µm)", @x <ERB.d!  
y: 0, 1.2 * I_max *cm^2 HmZ{L +"  
"intensity (W/ cm&sup2;)", @y Vur bW=~g  
y2: 0, 1.3 * N_Tm ^mb[j`CCt  
frame bcAvM;  
hx !xwG% {_  
hy kFQ8 y~>y}  
efD)S92  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 YFTjPBV  
  yscale = 2, lw :`M2P,  
  color = gray, wQ%mN[  
  width = 3, (E,Yo  
  maxconnect = 1, _ z;q9&J)  
  "N_dop (right scale)" b9"jtRTdz  
 ru`U'  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 3mSXWl^?  
  color = red, $z$u{  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 !=y]Sv~h  
  width = 3, *A~ G_0B  
  "pump" 0x9x@gF  
Q0\0f  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 8&Myva  
  color = blue, c5Q<$86  
  maxconnect = 1, zz^F k&  
  width = 3, !gLkJ)  
  "signal" DaH?@Q  
&*s0\ 8  
?X-)J=XG  
; ------------- fS:1^A2,  
diagram 5:                                  ！输出图表5 ]7Fs$y.  
TyKWy0x-3  
"TransitionCross-sections" Pub0IIs  
: iiw3#]  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) *FfMI  
'SYo_!  
x: 1450, 2050 )9S>Z ZF  
"wavelength(nm)", @x s!9dQ.  
y: 0, 0.6 WO6/X/#8b  
"cross-sections(1e-24 m&sup2;)", @y $o+5/c?|  
frame !6G?zipB  
hx J>^\oAgpE  
hy 9=,uq;  
g}f9dB,F  
f: s12_Tm(x * nm) /1e-24,      ！Tm3+吸收截面与波长的关系 xBFJ} v  
  color = red, SSBg?H'T  
  width = 3, Fxc)}i`   
  "absorption" ,+;:3gRk9  
f: s21_Tm(x * nm) /1e-24,  ！Tm3+发射截面与波长的关系 &3Zy|p4V<  
  color = blue, azP+GM=i7  
  width = 3, 7n o5b] \  
  "emission" >\ u<&>i  
F/1#l@qN  
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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