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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

(* \9!W^i[+  
Demo for program"RP Fiber Power": thulium-doped fiber laser, Hw_(Af?C  
pumped at 790 nm. Across-relaxation process allows for efficient fH>]>2fS  
population of theupper laser level. ) =sm{R%T  
*)            ！（*  *）注释语句 (@mvNlc:  
cs,%Zk.xjw  
diagram shown: 1,2,3,4,5  ！指定输出图表 1)vdM(y3j  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 kpcIU7|e  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 5|";L&`  
; 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 <1>\?$)D  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 m8fxDepFA  
; 5:"Transition Cross-sections"    ！不同波长的跃迁横截面，横坐标波长，纵坐标为横截面 ]k5l]JB  
Ydh]EO0'  
include"Units.inc"         ！读取“Units.inc”文件中内容 J)6f"{} &  
3S ,D~L^  
include"Tm-silicate.inc"    ！读取光谱数据 g*TAaUs|n  
{!@Pho)Q  
; Basic fiberparameters:    ！定义基本光纤参数 pX+`qxF\  
L_f := 4 { fiberlength }      ！光纤长度 94LFElE3  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 ._Wm%'uX  
r_co := 6 um { coreradius }                ！纤芯半径 noV]+1#"V  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 b&. o9PV"  
ul1#_xp  
; Parameters of thechannels:                ！定义光信道 nJNdq`y2  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm LS*^TA(I[  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦  k/ls!e?  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W Pl9/1YhD/  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um kK>PFk(  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 Vnlns2pQl  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 ]N,n7v+}  
7'k+/rAO  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm ,~p'p)  
w_s := 7 um                          ！信号光的半径 );'8*e'  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 Tn8Z2iC  
loss_s := 0                            ！信号光寄生损耗为0 )=8MO-{  
]^uO3!+  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 2'$p(  
|MY6vRJ(  
; 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 q4C$-W%rj  
calc J.N%=-8  
  begin =0cyGo  
    global allow all;                   ！声明全局变量 be}^}w=  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 < {$zOF}  
    add_ring(r_co, N_Tm); *+{umfZy  
    def_ionsystem();              ！光谱数据函数 $fR[zBxA  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 Zu951+&`  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 LS}dt?78`V  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 *W~+Nho.A  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 l:5x*QSX  
    finish_fiber();                                   3iMh)YH5b  
  end; +}@1X&v:  
L}7c{6!F7  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 X`YAJG  
show "Outputpowers:"                                   ！输出字符串Output powers： dcew`$SJp  
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） ?aR)dQ  
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） %{Ez0XwGCn  
)o-rg  
I'%vN^e^  
; ------------- x<W`2Du  
diagram 1:                   !输出图表1 R/&Bze  
n@r'b{2;l  
"Powers vs.Position"          ！图表名称 _1S^A0ft  
Ju4={^#  
x: 0, L_f                      ！命令x: 定义x坐标范围  K6d9[;F  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 o*& D;  
y: 0, 15                      ！命令y: 定义y坐标范围 $)t ]av  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 ^dj avJ  
frame          ！frame改变坐标系的设置 K"B2 SsC  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） bR"hl? &c  
hx             ！平行于x方向网格 U`Bw2Vdk]S  
hy              ！平行于y方向网格 Rl@k~;VV  
x2/L`q"M?=  
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 u?6L.^Op  
  color = red,  ！图形颜色 2YI#J.6]H  
  width = 3,   ！width线条宽度 8:E)GhX  
  "pump"       ！相应的文本字符串标签 :d\ne  
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 sJu^deX  
  color = blue,     o\6A]T=R  
  width = 3, ^o^[p %  
  "fw signal" R%B"Gtl)  
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 Gu?O yL  
  color = blue, OW!cydA-  
  style = fdashed, %v 0 I;t  
  width = 3, r6k0=6i  
  "bw signal" O&h3=?O&B  
b/65Q&g'  
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 H=b54.J8&  
  yscale = 2,            ！第二个y轴的缩放比例 z9OhY]PPF  
  color = magenta, Rrh?0qWs  
  width = 3, ?\[2Po]n  
  style = fdashed, ti$d.Kc(  
  "n2 (%, right scale)" 0Yk@O) x  
aD)XxXwozm  
f: 100 * n(x, 3),          ！n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比 VQA}!p  
  yscale = 2, 6M^P]l  
  color = red, g_'F(An  
  width = 3, 49. @Uzo  
  style = fdashed, MR:GH.uM:  
  "n3 (%, right scale)" WrWJ!   
n-iy;L^b  
>b9nc\~  
; ------------- n/*BK;  
diagram 2:                    ！输出图表2 v[4A_WjT  
Zq wxi1  
"Variation ofthe Pump Power" e_mUO"  
m]LR4V6k|  
x: 0, 10 /'vCO |?L  
"pump inputpower (W)", @x ` O;+N"v  
y: 0, 10 1NJ,If]  
y2: 0, 100 EAiE@r>4  
frame 5m2`$y-nb  
hx g+shz{3zvz  
hy \Y;LbB8D  
legpos 150, 150 \GA6;6%Oo  
Mle@.IIT  
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 d#~^)r  
  step = 5, }py6H[  
  color = blue, ?M2#fD]e  
  width = 3, n27df9L  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 LObS 7U  
  finish set_P_in(pump, P_pump_in) 9nW/pv  
%N}O Mc.W  
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 UG)J4ZX  
  yscale = 2, #H]b Xr  
  step = 5, d V+%x"[:  
  color = magenta, iaShxoIV  
  width = 3, ] Tc!=SV  
  "population of level 2 (%, rightscale)", F!v`._]  
  finish set_P_in(pump, P_pump_in) )na 8a!  
/58]{MfrJ  
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 F3k]*pk8w  
  yscale = 2, %4X#|22n  
  step = 5, S0X %IG  
  color = red, M#v#3:&5  
  width = 3, Bl,rvk2  
  "population of level 3 (%, rightscale)", a`SQcNBf*  
  finish set_P_in(pump, P_pump_in) NpS*]vSO  
"&jWC  
ziFg+i%s  
; ------------- ,P G d  
diagram 3:                         ！输出图表3 pUs:r0B  
(#zSVtZ  
"Variation ofthe Fiber Length" :^ 9sy  
 XL@Y!  
x: 0.1, 5 |Ld/{&Qr  
"fiber length(m)", @x [Yt!uhww  
y: 0, 10 :4o08M%  
"opticalpowers (W)", @y &V. ps1  
frame I'"b3]DXG  
hx w h4WII  
hy 5p9zl=mT  
8Lm}x_  
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 OC0dAxq  
  step = 20,             V0'T)  
  color = blue, e_Cns&  
  width = 3, ` oBlv  
  "signal output" c;M7[y&  
gO C5  
;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 >3R%GNw  
   step = 20, color = red, width = 3,"residual pump" 1PwqW g-\\  
ppv/ A4Kv  
! set_L(L_f) {restore the original fiber length } ?NazfK  
5)=XzO0  
Vf Jpiv1  
; ------------- $@8$_g|Wz  
diagram 4:                                  ！输出图表4 FScE3~R  
B?}ZAw>  
"TransverseProfiles" ^QX3p,Y  
UNc!6Q-.  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) GyE-fB4C  
 [Tha j  
x: 0, 1.4 * r_co /um SG6@Rn*^  
"radialposition (µm)", @x H^Th]-Zl  
y: 0, 1.2 * I_max *cm^2 C^uH]WO  
"intensity (W/ cm&sup2;)", @y :5/P{Co (  
y2: 0, 1.3 * N_Tm {~=Edf  
frame p h[ ^ve  
hx ~b}@*fq  
hy zE"ME*ou  
zu6Y*{$>g  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 e}qG_*  
  yscale = 2, IvLo&6swW  
  color = gray, oH/6  
  width = 3, <|= UrG  
  maxconnect = 1, 2i+'?.P  
  "N_dop (right scale)" eT??F  
x"kc:F  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布  Lb# e  
  color = red, @^Tof5?F?  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 w6F'rsko]  
  width = 3, ?A|8J5E V  
  "pump" Z P\A  
chjXsq#Q^  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 g(d9=xq@k  
  color = blue, e/@tU'$  
  maxconnect = 1, xFZA1 8  
  width = 3, >YPC &@9   
  "signal" TV$Pl[m   
Y)@mL~){  
o XA3 i  
; ------------- p7 b`Z>}  
diagram 5:                                  ！输出图表5 2#z6=M~A  
\RcB,?OK  
"TransitionCross-sections" F.P4c:GD  
hX#s3)87  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) n-m+@jRz  
& [)1LRt_  
x: 1450, 2050 w9D<^(_}/  
"wavelength(nm)", @x J(*QtF  
y: 0, 0.6 x\ieWF1  
"cross-sections(1e-24 m&sup2;)", @y E\N?D  
frame (17%/80-J  
hx D[.; H)V  
hy .k5 TQt  
G #.(% ,  
f: s12_Tm(x * nm) /1e-24,      ！Tm3+吸收截面与波长的关系 \Q.Qos  
  color = red, oY@4G)5  
  width = 3, h>v;1Q O9D  
  "absorption" [uxhdR`T  
f: s21_Tm(x * nm) /1e-24,  ！Tm3+发射截面与波长的关系 DXPiC[g]  
  color = blue,  V"n0"\k,  
  width = 3, / H+br_D9  
  "emission" tqLn  A  
2.)@u~^Q  
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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