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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

(* #al^Uqd  
Demo for program"RP Fiber Power": thulium-doped fiber laser, E cz"O   
pumped at 790 nm. Across-relaxation process allows for efficient AWNd(B2o  
population of theupper laser level. HwK "qq-  
*)            ！（*  *）注释语句 \Y 4Z Q"0Q  
mwhn=y#]*  
diagram shown: 1,2,3,4,5  ！指定输出图表 K9Fnb6J$u  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 VMXXBa&  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 ml 2z  
; 3:"Variation of the Fiber Length"！信号输出功率vs 光纤长度的变化，仿真最佳光纤长度 K)@Buu&,p  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 /RmCMT  
; 5:"Transition Cross-sections"    ！不同波长的跃迁横截面，横坐标波长，纵坐标为横截面 j( :A  
3?(p;  
include"Units.inc"         ！读取“Units.inc”文件中内容 EKD>c$T^  
YTit=4|  
include"Tm-silicate.inc"    ！读取光谱数据 Oei2,3l,?  
N^N?!I  
; Basic fiberparameters:    ！定义基本光纤参数 O+J;Hp;\_  
L_f := 4 { fiberlength }      ！光纤长度 s~w+bwr  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 O waXG/z~  
r_co := 6 um { coreradius }                ！纤芯半径 ?@(H. D6'v  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 ]~ M -KT  
`:4cb $  
; Parameters of thechannels:                ！定义光信道 zghm2{:`?g  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm 2ow\d b  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 N|LVLsK  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W UQ~rVUo.c  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um [40 YoVlfM  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 TI  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 E9hWn0 e  
x"80c(i  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm +rY0/T_0,  
w_s := 7 um                          ！信号光的半径 o7seGw<$X  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 ^ I YN"yX_  
loss_s := 0                            ！信号光寄生损耗为0 , &SJ?XAs  
?Sxnq#r#  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 G9q0E|  
OpE+e4~IF  
; Function for defining themodel:   ！定义模型函数，一定要有calc命令，否则函数只会被定义，但不会被执行 I:"`|eHxv  
calc N!,l4!M\N  
  begin Hkt'~ L*   
    global allow all;                   ！声明全局变量 ')V5hKb^  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 RI;RE/Z  
    add_ring(r_co, N_Tm); swA"_A8>u  
    def_ionsystem();              ！光谱数据函数 .Ps;O  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 -~k2Gy;E  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 |O?Aj1g[c?  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 9g"H9)EZ^  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 TbuR?#  
    finish_fiber();                                   iz(+(M  
  end; 8hg(6 XUG  
5KSsRq/8"  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 Gov{jksr  
show "Outputpowers:"                                   ！输出字符串Output powers： \zwb>^  
show"pump:     ", P_out(pump):d3:"W"  ！输出字符串pump：和计算值（格式为3个有效数字，单位W） =I1@O9}+i  
show"signal:   ",P_out(signal_fw):d3:"W" ！输出字符串signal：和计算值（格式为3个有效数字，单位W） \^cn}db)  
{xX|5/z  
)J0VB't  
; ------------- G#Ow>NJ  
diagram 1:                   !输出图表1 /'(P{O>{j  
HApP*1J^c  
"Powers vs.Position"          ！图表名称 C*!_. <b  
n6}1{\  
x: 0, L_f                      ！命令x: 定义x坐标范围 E \RU[  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 %XeU4yg\e  
y: 0, 15                      ！命令y: 定义y坐标范围 d\f 5\Y  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 D4wB &~U  
frame          ！frame改变坐标系的设置 4 #N#[;M  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） .8m)^ET  
hx             ！平行于x方向网格 "$&F]0  
hy              ！平行于y方向网格 T Bco  
^5+-7+-S  
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 V1G]LM  
  color = red,  ！图形颜色 hbK+\X  
  width = 3,   ！width线条宽度 THJ+OnP  
  "pump"       ！相应的文本字符串标签 2i)y'+s  
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 &}uO ]0bR  
  color = blue,     1jyWP#M#  
  width = 3, [~3p+  
  "fw signal" V4H+m,R  
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 eD3F%wxz  
  color = blue, )+G(4eIT  
  style = fdashed, AN;?`AM;  
  width = 3, L!Ro`6|7;  
  "bw signal" N?XN$hwdZ  
`3-j%H2R  
f: 100 * n(x, 2),    ！n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 UgP5^3F2  
  yscale = 2,            ！第二个y轴的缩放比例 @&+ 1b=  
  color = magenta, L8fr uwb  
  width = 3, o\#C] pp  
  style = fdashed, {e^llfj$#  
  "n2 (%, right scale)"  ;P_Zen  
0)B+ :  
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 580t@?  
  yscale = 2, OL>/FOH:Fx  
  color = red, s$en5)  
  width = 3, R Mm`<:H_  
  style = fdashed, 4*3vZ6lhu  
  "n3 (%, right scale)" HUJ $e2[  
l>ttxYBa<d  
 JeA}d  
; ------------- FueJe/~t  
diagram 2:                    ！输出图表2 }Z6/b _kV  
w-2]69$k  
"Variation ofthe Pump Power" ,'j5tU?c  
"`S61m_  
x: 0, 10 1pK7EK3R  
"pump inputpower (W)", @x (GV6%l#I  
y: 0, 10 t*x;{{jL#(  
y2: 0, 100 uzo}?X#  
frame ZFzOW  
hx QWoEo  
hy <L-L}\-I"  
legpos 150, 150 P'K')]D=!  
25(\'484>  
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 ;i]cmy  
  step = 5, s0:1G -I  
  color = blue, S("bN{7nE  
  width = 3, &jJgAZ!  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 _RmrjDk  
  finish set_P_in(pump, P_pump_in) 4-m%[D |W  
"*0 szz'  
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 + $-a:zx`l  
  yscale = 2, ^K"`k43{  
  step = 5, Np<Aak  
  color = magenta, k@2gw]y"  
  width = 3, 82<L07fB  
  "population of level 2 (%, rightscale)", \Q6Ip@?  
  finish set_P_in(pump, P_pump_in) ':,LZ A8A  
z23KSPo  
f: (set_P_in(pump,x); 100 * n_av(3)),   ！改变泵浦信号功率对能级3上激活粒子占比的影响 '>6-ie^0  
  yscale = 2, K5KN}sRs"  
  step = 5, UY+~xzm  
  color = red, :$WRV-  
  width = 3, OjCT%6hy;  
  "population of level 3 (%, rightscale)", ;2iZX=P`n  
  finish set_P_in(pump, P_pump_in) ;V;4#  
H(AYtnvB  
{T IGPK  
; ------------- rQWft r^  
diagram 3:                         ！输出图表3 7+ysE  
7Ctm({I-  
"Variation ofthe Fiber Length" 0Zq" -  
rf~Ss<  
x: 0.1, 5 h{m]n!  
"fiber length(m)", @x ka'MF;!rc  
y: 0, 10 ;(afz?T  
"opticalpowers (W)", @y N>~*Jp2;  
frame NlDM/  
hx 0L6L_;o  
hy M *}$$Fe|  
i2*nYd`K  
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 t.w?OyO  
  step = 20,             sJD"u4#y  
  color = blue, " JRlj  
  width = 3, J7xZo=@k  
  "signal output" RBb@@k[v  
F ^\v`l,  
;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 6?74l;  
   step = 20, color = red, width = 3,"residual pump" b,'./{c0  
n`hSn41A  
! set_L(L_f) {restore the original fiber length } MT*b+&1e  
Ax\Fg 5  
7#&s G  
; ------------- jzV#%O{`  
diagram 4:                                  ！输出图表4 H(X~=r  
V *] !N  
"TransverseProfiles" hImCy9i}  
6y0C  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) GwvxX&P  
L{=z}QO  
x: 0, 1.4 * r_co /um 'FVT"M~  
"radialposition (µm)", @x OJK/>  
y: 0, 1.2 * I_max *cm^2 nO/5X>A,Zw  
"intensity (W/ cm&sup2;)", @y 4>|5B:  
y2: 0, 1.3 * N_Tm A#i-C+"}  
frame  2O  
hx SX4p(t  
hy lC2xl(#!  
|&'*Z\*ya  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 zqeU>V~<F  
  yscale = 2, A~6 Cs  
  color = gray, h~1QmEat  
  width = 3, !F8 !]"*  
  maxconnect = 1, WX[y cm8  
  "N_dop (right scale)" %`TLs^  
nGf@zJDb  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 '-x%?Ll  
  color = red, -lp_~)j^  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 }_;nl n?t(  
  width = 3, i6-K!  
  "pump" HqgH\  
w"e2}iE7  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 uqnZ  
  color = blue, ?( '%QfT  
  maxconnect = 1, Y}6)jzBV  
  width = 3, ALv\"uUNu+  
  "signal" LiRY -;8=  
w7C=R8^  
v+OVZDf  
; ------------- %(]rc%ry0  
diagram 5:                                  ！输出图表5 9D<HJ(  
[q@%)F  
"TransitionCross-sections" v Zxy9Wmc  
ovohl<o\  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) -bE|FFU  
1-n0"lP~4  
x: 1450, 2050 Hke\W'&  
"wavelength(nm)", @x :Ls36E8f=  
y: 0, 0.6 L_~G`Rb3  
"cross-sections(1e-24 m&sup2;)", @y n&fV3[m`2  
frame 3LmHH =  
hx jDnh/k0{d  
hy 7Av]f3Zr  
\,N dg*qC  
f: s12_Tm(x * nm) /1e-24,      ！Tm3+吸收截面与波长的关系 87Kx7CKF"  
  color = red, (07d0<<[  
  width = 3, *G^]j )/  
  "absorption" ^#o.WL%4/B  
f: s21_Tm(x * nm) /1e-24,  ！Tm3+发射截面与波长的关系 OrBFe *2y  
  color = blue, yV. P.Q  
  width = 3, .EdV36$n  
  "emission" HL?pnT09  
.EcMn  
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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