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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

(* +~f5dJyk`  
Demo for program"RP Fiber Power": thulium-doped fiber laser, q~G@S2=}0}  
pumped at 790 nm. Across-relaxation process allows for efficient vR?E'K3  
population of theupper laser level. 1,Ji|&Pwf  
*)            ！（*  *）注释语句 :!<U"AC  
_&}z+(Ug  
diagram shown: 1,2,3,4,5  ！指定输出图表 mt*/%>@7R  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 E=L 1q)  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 [E6ZmMB&  
; 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 ? H7?>ZE  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 UMj8<Lq)j  
; 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 #xfPobQ>il  
t# <(Q  
include"Units.inc"         ！读取“Units.inc”文件中内容 &.)ST0b4  
tq&CJvJ4  
include"Tm-silicate.inc"    ！读取光谱数据 8s)(e9Sr  
v%!'vhf_K  
; Basic fiberparameters:    ！定义基本光纤参数 U2kl-E:  
L_f := 4 { fiberlength }      ！光纤长度 $E h:m&hq  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 ;noZmPa  
r_co := 6 um { coreradius }                ！纤芯半径 f&88N<)  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 @D7/u88|  
-Ta| qQa  
; Parameters of thechannels:                ！定义光信道 @lTd,V5f  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm k btQ  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 b_>x;5k  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W PIZK*Lop  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um {RHa1wc  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布  MKZq*  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 :BpXi|n;  
4StoEgFS  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm VGeyZ\vU  
w_s := 7 um                          ！信号光的半径 /j;HM[  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 u?lbC9}$  
loss_s := 0                            ！信号光寄生损耗为0 Y:4 /06I  
V6 uh'2  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 @JU Xp  
xa$4P [  
; Function for defining themodel:   ！定义模型函数，一定要有calc命令，否则函数只会被定义，但不会被执行 e(Y5OTus  
calc !1[ZfTX^a  
  begin +~za6  
    global allow all;                   ！声明全局变量 )bl^:C  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 *r].EBJ\  
    add_ring(r_co, N_Tm); U_<k*o@:  
    def_ionsystem();              ！光谱数据函数 c%5Suu( J6  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 ).8NZ Aj  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 )kvrQ6  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 @ *n oma  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 ;>r E+k%_  
    finish_fiber();                                   <P0&!yN  
  end; fO,m_ OR:)  
uh&Qdy!I  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 Q 1[E iM3  
show "Outputpowers:"                                   ！输出字符串Output powers： IZOO>-g'f  
show"pump:     ", P_out(pump):d3:"W"  ！输出字符串pump：和计算值（格式为3个有效数字，单位W） n7(/ml+Q_  
show"signal:   ",P_out(signal_fw):d3:"W" ！输出字符串signal：和计算值（格式为3个有效数字，单位W） =.2)wA"e'  
+r$M 9  
J>Bc-%.Q  
; ------------- h4N&Yb fo  
diagram 1:                   !输出图表1 7[It  
`[F[0fY-  
"Powers vs.Position"          ！图表名称 DQ hstXX  
ewVks>lbz  
x: 0, L_f                      ！命令x: 定义x坐标范围 "P8( R  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 UYvdzCUh  
y: 0, 15                      ！命令y: 定义y坐标范围 Eu`K2_b  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 O[15x H,  
frame          ！frame改变坐标系的设置 v{oHC4  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） !m6=Us  
hx             ！平行于x方向网格 R/Te ;z  
hy              ！平行于y方向网格 m*'87a9q0  
Q&8epO|J  
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 7O<K?;I  
  color = red,  ！图形颜色 2aJ_[3p/h]  
  width = 3,   ！width线条宽度 A}G>JL  
  "pump"       ！相应的文本字符串标签 a}V<CBi  
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 a 3C\?5  
  color = blue,     nJcY>Rp?  
  width = 3, y4Lh:;  
  "fw signal" /PZxF  
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 8]&\FA8  
  color = blue, (\H^ KEy  
  style = fdashed, 9F2MCqvcm  
  width = 3, m4,inA:o  
  "bw signal" {9XQ~t"m^  
->`R[k  
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 y;=/S?L.:  
  yscale = 2,            ！第二个y轴的缩放比例 wG X\ub#!  
  color = magenta, ub]"b[j\1  
  width = 3, !+_X q$9_  
  style = fdashed, F5%IsAH  
  "n2 (%, right scale)" %:yVjb,Yf  
^ wb9n  
f: 100 * n(x, 3),          ！n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比 x\5v^$  
  yscale = 2, Pa-{bhllu)  
  color = red, Y InPmR  
  width = 3, ky I~  
  style = fdashed, KEo?Cy?%ff  
  "n3 (%, right scale)" t(Gg 1  
%H3 M0J2L  
{~EPP .  
; ------------- `gz/?q  
diagram 2:                    ！输出图表2 _zDf8hy  
Qq3UC%Z1  
"Variation ofthe Pump Power" jf=\\*64r4  
zj 2l&)N  
x: 0, 10 EM!9_8 f  
"pump inputpower (W)", @x +Sak_*fq  
y: 0, 10 Yz ? 8n  
y2: 0, 100 w3jcit|  
frame b=XHE1^rM  
hx 4ZtsLMwLD  
hy Xp0S  
legpos 150, 150 y=LN| vkQ  
z4 KKt&  
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 3c[]P2Bh  
  step = 5, s=hao4v7z  
  color = blue, #sM*<2vj  
  width = 3, yny1i9 y  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 gmN$}Gy}  
  finish set_P_in(pump, P_pump_in)  I}u&iV`  
qv3% v3\4  
f: (set_P_in(pump,x); 100 * n_av(2)),   ！改变泵浦信号功率对能级2上激活粒子占比的影响 N1Dr'aw*  
  yscale = 2, -ju}I  
  step = 5, B:#9   
  color = magenta, }X~"RQf9  
  width = 3, lQ#='Jqfp  
  "population of level 2 (%, rightscale)", Zw_'u=r >  
  finish set_P_in(pump, P_pump_in) S#nW )=   
v$#l]A_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 Ch73=V  
  yscale = 2, mq+<2 S  
  step = 5, x+EEMv3u:  
  color = red, $Z<x r  
  width = 3, _FkIg>s  
  "population of level 3 (%, rightscale)", aV#phP  
  finish set_P_in(pump, P_pump_in) 0A')zKik  
96i #  
i9D<jkc  
; ------------- tv%B=E!r  
diagram 3:                         ！输出图表3 5IfC8drAs  
T l8`3`e  
"Variation ofthe Fiber Length" ;lf$)3%[  
yaYJmhG  
x: 0.1, 5 y#i` i  
"fiber length(m)", @x KO[,C[;|j  
y: 0, 10 J=b 'b%  
"opticalpowers (W)", @y z@v2t>@3k  
frame ^Vg-fO]V  
hx vrIWw?/z?  
hy OJD!Ar8Q  
! =*k+gpF  
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 A~H@0>1  
  step = 20,             #'BPW<Ob  
  color = blue, RO[6PlrRN  
  width = 3, FT\%=>{  
  "signal output" wY3| 5kbDj  
yiMqe^zy  
;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 Hz j%G>  
   step = 20, color = red, width = 3,"residual pump" 395`Wkv  
pj Md  
! set_L(L_f) {restore the original fiber length } {xf00/  
\|CuTb;0  
ef2)k4)"  
; ------------- (Ta(Y=!uq  
diagram 4:                                  ！输出图表4 W0<2*7s  
+*wr=9>  
"TransverseProfiles" Ho1V)T>  
9ePom'1f1  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) -PTfsQk  
OO\$'% y`  
x: 0, 1.4 * r_co /um N v6=[_D  
"radialposition (µm)", @x !\!j?z=O8  
y: 0, 1.2 * I_max *cm^2 f o idneus  
"intensity (W/ cm&sup2;)", @y XrI$@e*  
y2: 0, 1.3 * N_Tm a3L-q>h  
frame (wf3HEb_  
hx ._q<~_~R  
hy ?hYWxWW  
ZFs xsg^r  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 yB|1?L#  
  yscale = 2, 6G{ Q@  
  color = gray, A2SDEVU  
  width = 3, +G)a+r'0Q  
  maxconnect = 1, <==6fc>s  
  "N_dop (right scale)" Cv [1HO<  
<`WcI`IA b  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 'V\V=yc1  
  color = red, &0]5zQ  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 6FY.kN\  
  width = 3, bnJ4Edy  
  "pump" tV h"C%Vkr  
;,s9jw  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 ZEso2|   
  color = blue, @M"( r"ab  
  maxconnect = 1, -q\Rbb5M  
  width = 3, 1x8wQ/p|  
  "signal" U+zntB  
{nw.bKq 7  
#Hy\l J  
; ------------- fk!9` p'  
diagram 5:                                  ！输出图表5 r"|.`$:B  
u<4bOJn({  
"TransitionCross-sections" <v=s:^;C0  
]^,!;do  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) !(gSXe)*  
f Xh{ _>  
x: 1450, 2050 txE+A/>i9  
"wavelength(nm)", @x rA E5.Q!u  
y: 0, 0.6 vM50H  
"cross-sections(1e-24 m&sup2;)", @y 3R-5&!i  
frame Wg20H23XW  
hx PkLNIp1  
hy "Q{ l])N  
3gnO)"$  
f: s12_Tm(x * nm) /1e-24,      ！Tm3+吸收截面与波长的关系 1jO%\uR/  
  color = red, )?pnV":2Y  
  width = 3, 6b9J3~d\E  
  "absorption" %> 5>wP   
f: s21_Tm(x * nm) /1e-24,  ！Tm3+发射截面与波长的关系 ".2d{B  
  color = blue, }kP<zvAaw  
  width = 3, u:mndTpB6x  
  "emission" pRd'\+  
Sp*4Z`^je  
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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