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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

(* F_Q?0 Do0'  
Demo for program"RP Fiber Power": thulium-doped fiber laser, l&z)Q/>?pZ  
pumped at 790 nm. Across-relaxation process allows for efficient W|PKcZ ]Uc  
population of theupper laser level. nj7wc9z4  
*)            ！（*  *）注释语句 }wJDHgt]-p  
f8Xe%"<  
diagram shown: 1,2,3,4,5  ！指定输出图表 tsFwFB*  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 ml|[x M8  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 95,{40;X7  
; 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 I.<>6ISI@  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 ?5%|YsJP_  
; 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 ?\QEK  
}<EA)se"  
include"Units.inc"         ！读取“Units.inc”文件中内容 0.^9)v*i  
n%Vt r  
include"Tm-silicate.inc"    ！读取光谱数据 ?w}E/(r  
Fn8d;%C  
; Basic fiberparameters:    ！定义基本光纤参数 '~^3 =[Z  
L_f := 4 { fiberlength }      ！光纤长度 w/KCu W<  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 8q6b3q:c  
r_co := 6 um { coreradius }                ！纤芯半径 ? U:LAub  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 {-sy,EYcw  
w%no6 ;  
; Parameters of thechannels:                ！定义光信道 x+}6qfc$9k  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm !!=%ty  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 J^@0Ff;=5^  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W D cN s`2  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um #-9;Hn4x  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 ])= k";76  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 fz`+j -u  
C(:tFuacpw  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm <}c`jN!z.  
w_s := 7 um                          ！信号光的半径 t(4%l4i;X  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 U!"+~d)  
loss_s := 0                            ！信号光寄生损耗为0 silTL_$  
P5+FZzQ  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 Z6}B}5@y  
[~;#]az  
; 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 "+js7U-  
calc "YlN_ U  
  begin 1;p'2-x  
    global allow all;                   ！声明全局变量 V~+{douq  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 8J:6uO c|  
    add_ring(r_co, N_Tm); %y~=+Sm%m  
    def_ionsystem();              ！光谱数据函数 dkuB{C,  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 Q(-:)3g[aL  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 %f.(^<G u  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 jUq^$+N  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 xf8C$|,  
    finish_fiber();                                   8>TDrpT}  
  end; =GpO }t">  
EPCu  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 k`W.tMo  
show "Outputpowers:"                                   ！输出字符串Output powers： .y{qsL^P  
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） `z$<1Q T  
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） r'/7kF- 5  
OLc/Vij;  
y< hIXC  
; ------------- '&5A*X]d  
diagram 1:                   !输出图表1 [-cYFdt"V  
L  &F0^  
"Powers vs.Position"          ！图表名称 dA[Z\  
Oslbt8)U6  
x: 0, L_f                      ！命令x: 定义x坐标范围 xBhfC!AK}  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 |1G/J[E  
y: 0, 15                      ！命令y: 定义y坐标范围 c+/SvRx^>  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 (!Q^.C_m  
frame          ！frame改变坐标系的设置 ![Z'jC py  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） !o2lB^e8  
hx             ！平行于x方向网格 6elmLDMni\  
hy              ！平行于y方向网格 0n S69tH  
~Rx[~a  
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 tWYKW3~]  
  color = red,  ！图形颜色 mh>)N"  
  width = 3,   ！width线条宽度 4,kT4_&,  
  "pump"       ！相应的文本字符串标签 k#T onT  
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 Bry\"V"'g  
  color = blue,     $D8eCjUm  
  width = 3, MoN;t;  
  "fw signal" X#<#7.  
f: P(signal_bw, x),   ！P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 -E#!`~&V  
  color = blue, f5+a6s9  
  style = fdashed, +1Oi-$ 2-  
  width = 3, U]lXw+&  
  "bw signal" /i|T\  
<;:M:{RZY  
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 I ;N)jj`b  
  yscale = 2,            ！第二个y轴的缩放比例 {w.rcObIw+  
  color = magenta, :e:jILQ[  
  width = 3, MV5'&" ,oB  
  style = fdashed, |?0Cm|?  
  "n2 (%, right scale)" !']=7It{  
w+bQpIP M  
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 3!^5a %u  
  yscale = 2, ]%m0PU#  
  color = red, I~EQuQ>=  
  width = 3, LbDhPG`u  
  style = fdashed, y\b.0-z  
  "n3 (%, right scale)" T<06y3sN  
/w{DyHT  
,9gyHQ~  
; ------------- S`TP#uzKu]  
diagram 2:                    ！输出图表2  L3P_  
u1O?`  
"Variation ofthe Pump Power" g?!vR id@S  
C)/uX5  
x: 0, 10 Y[9x\6 _E  
"pump inputpower (W)", @x YbF}(iM  
y: 0, 10 EO$_]0yI;_  
y2: 0, 100 Asicf{HaX  
frame 9:CJl6~N)#  
hx 3}}~(  
hy "0Uh(9Fv  
legpos 150, 150 j8 nG Gx  
0PD]#.+  
f: (set_P_in(pump, x);P_out(signal_fw)), ！set_P_in(pump,x)改变泵浦信道功率；P_out(signal_fw)输出前向信号光 6,)!\1k  
  step = 5, 7%L%dyN  
  color = blue, f m.-*`ax  
  width = 3, w}^z1n  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 a(s}Ec${Z  
  finish set_P_in(pump, P_pump_in) &bBK#d*-u?  
B\A2Vm`&  
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 'n% Ac&kk  
  yscale = 2, :\x53-&hO4  
  step = 5, &=5  
  color = magenta, Gd1%6}<~  
  width = 3, 4A.ZMH  
  "population of level 2 (%, rightscale)", #~%tdmGuL  
  finish set_P_in(pump, P_pump_in) VYI%U'9Q  
X6%w6%su5  
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 :ak D  
  yscale = 2, w35r\x +  
  step = 5, Y15KaoK?  
  color = red, ao>bnRXR  
  width = 3, !tBNA  
  "population of level 3 (%, rightscale)", ?I&ha-."  
  finish set_P_in(pump, P_pump_in) <_-&{Pv  
ivsp):W  
SC)4u l%  
; ------------- -Czq[n=0(  
diagram 3:                         ！输出图表3 RX:wt  
!xyO  
"Variation ofthe Fiber Length" "&%: 9O  
~>zml1aJ6  
x: 0.1, 5 _XIls*6AK  
"fiber length(m)", @x W@v@|D@  
y: 0, 10 3/mVdU?U  
"opticalpowers (W)", @y mz;S*ONlV  
frame uhvmh  
hx (-Rh%ZHH  
hy rMAH YH9  
[,)yc/{*  
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 1$oVcDLl  
  step = 20,             |9ro&KA  
  color = blue, b}4k-hZL  
  width = 3, :#v8K;C  
  "signal output" #<|5<U  
j$<uE{c  
;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 \)859x&(  
   step = 20, color = red, width = 3,"residual pump" 9H:5XR  
Bi2be$nV  
! set_L(L_f) {restore the original fiber length } =SPuOy8  
HubSmbS1  
ei'=%r8~  
; ------------- %:oyHlz%  
diagram 4:                                  ！输出图表4 0 ;kcSz  
;mH1J'.(a  
"TransverseProfiles" r1&b#r>  
]bCeJE.+)  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) iaO;i1K5U  
wOQ-sp0q0  
x: 0, 1.4 * r_co /um HVaWv].  
"radialposition (µm)", @x |$@/ Z +  
y: 0, 1.2 * I_max *cm^2 Qx CZ<|  
"intensity (W/ cm&sup2;)", @y .CH0P K=l  
y2: 0, 1.3 * N_Tm 0.S].Y[  
frame |1J=wp)#  
hx d (]t}  
hy .kh%66:  
e:}8|e~T  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 7qSlqA<Hs  
  yscale = 2, J,;[n*s  
  color = gray, qp (ng 8%c  
  width = 3, ?PORPv#  
  maxconnect = 1, Zy^mSI4i  
  "N_dop (right scale)" MN\/F4Io  
v<iMlOEt  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 [tDUR  
  color = red, Wh[+cH"M  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 `C"Slz::  
  width = 3, Ao)hb4ex  
  "pump" /=Bz[ O  
@>f]0,"(  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 ']^e,9=Q  
  color = blue, Ry*NRP;  
  maxconnect = 1, X1G[&  
  width = 3, Vt{C80n&N  
  "signal" /9dV!u!;  
$@d`Kz;  
cC w,b]  
; ------------- YAnt}]u!"  
diagram 5:                                  ！输出图表5 RL/~E xYC  
Q(h,P+  
"TransitionCross-sections" "Q9S<O8)  
4S|! iOY  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) 'JY*K:-  
fVv#|   
x: 1450, 2050 *>%34m93  
"wavelength(nm)", @x Z'dY,<@  
y: 0, 0.6 1) V,>)Ak  
"cross-sections(1e-24 m&sup2;)", @y  =Run  
frame ElAJR4'{*i  
hx m! &bK5+*  
hy K6=-Zf  
?cdSZ'49[  
f: s12_Tm(x * nm) /1e-24,      ！Tm3+吸收截面与波长的关系 ; iQ@wOL]  
  color = red, , M$*c  
  width = 3, x-+[gNc 6  
  "absorption" :Bp{yUgi@  
f: s21_Tm(x * nm) /1e-24,  ！Tm3+发射截面与波长的关系 84tuN  
  color = blue, f ^mxj/%L  
  width = 3, |o~<Ti6]  
  "emission" x^_Wfkch]  
VHVU*6_w  
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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