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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

(* @xN)mi  
Demo for program"RP Fiber Power": thulium-doped fiber laser, p$l'y""i  
pumped at 790 nm. Across-relaxation process allows for efficient FuFA/R=x/  
population of theupper laser level. KNqs=:i  
*)            ！（*  *）注释语句 d8M8O3  
3zo:)N \K  
diagram shown: 1,2,3,4,5  ！指定输出图表 7oZtbBs]M  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 Oi\,clR^[o  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 g)^g_4  
; 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 N_f>5uv  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 D' oy% 1Q}  
; 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 &\AW} xp  
,=`iQl3(y/  
include"Units.inc"         ！读取“Units.inc”文件中内容 T&s}~S=m  
S/xCX!  
include"Tm-silicate.inc"    ！读取光谱数据 ,2lH*=m;  
Ep1p>s^  
; Basic fiberparameters:    ！定义基本光纤参数 6}GcMhU<r  
L_f := 4 { fiberlength }      ！光纤长度 ?m dGMf)  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 gR@,"6b3  
r_co := 6 um { coreradius }                ！纤芯半径 `8G {-_  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 yo_;j@BGR  
Bngvm9k3  
; Parameters of thechannels:                ！定义光信道 ]?(_}""1  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm UGK,+FN  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 &E`=pe/e  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W GbJVw\5Z*  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um )UAkg  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 ,w0Io   
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 ,nz3S5~  
m-XS_5x\  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm zOA2chy4  
w_s := 7 um                          ！信号光的半径 NLF6O9  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 's 'H&sa  
loss_s := 0                            ！信号光寄生损耗为0 3Tz~DdB  
E  *{_=pX  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 L3y`*&e>  
i=X B0-  
; 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 HiT j-O  
calc s.XLC43Rs  
  begin @]X5g8h  
    global allow all;                   ！声明全局变量 +~eybm;  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 .|<+-Rsj  
    add_ring(r_co, N_Tm); ~oE@y6Q  
    def_ionsystem();              ！光谱数据函数 t BKra  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 OmAa$L,'w  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 ~<q^4w.=7C  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道  @t<KS&  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 B),Z*lpC  
    finish_fiber();                                   d2 (3 ,  
  end; v `7`'  
@"'$e_jj"  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 A7=k 9|  
show "Outputpowers:"                                   ！输出字符串Output powers： JFh_3r'  
show"pump:     ", P_out(pump):d3:"W"  ！输出字符串pump：和计算值（格式为3个有效数字，单位W） <^fvTb&*  
show"signal:   ",P_out(signal_fw):d3:"W" ！输出字符串signal：和计算值（格式为3个有效数字，单位W） o 6A1;e  
R&9Q#n-  
xBg. QV  
; ------------- M*7:-Tb]C  
diagram 1:                   !输出图表1 "*Gp@  
N=~aj7B%  
"Powers vs.Position"          ！图表名称 od RtJ[   
L}\~)  
x: 0, L_f                      ！命令x: 定义x坐标范围 )T!3du:M  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 D) ;w)`  
y: 0, 15                      ！命令y: 定义y坐标范围 j/uu&\e  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 ~(K{D D7[N  
frame          ！frame改变坐标系的设置 40Hm+Ge  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） 6uKS!\EY|  
hx             ！平行于x方向网格 raCgctYVq  
hy              ！平行于y方向网格 J ` KyS  
RG y+W-  
f: P(pump, x),    ！命令f: 定义函数图；P(pump, x)函数是计算x位置处的泵浦光功率 :FX|9h  
  color = red,  ！图形颜色  7 j8Ou3  
  width = 3,   ！width线条宽度 K| '`w.  
  "pump"       ！相应的文本字符串标签 T1WH  
f: P(signal_fw, x),  ！P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 _FtsO<p)"  
  color = blue,     >m# bj^F\  
  width = 3, *5d6Q   
  "fw signal" K410.o/=-  
f: P(signal_bw, x),   ！P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 9N V.<&~  
  color = blue, <Xl/U^B  
  style = fdashed, 2i)vT)~  
  width = 3, ,f^ ICM  
  "bw signal" y{Vh?Z<E  
5dkXDta[G  
f: 100 * n(x, 2),    ！n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 B\Uocn  
  yscale = 2,            ！第二个y轴的缩放比例 LZ<^b6Dxk  
  color = magenta, }0~X)Vgm(  
  width = 3, }) Zcw1g  
  style = fdashed, 'mO>hD`V  
  "n2 (%, right scale)" Er@OmNT  
Q?/qQ}nNw  
f: 100 * n(x, 3),          ！n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比 "WZ|   
  yscale = 2, &l?AC%a5  
  color = red, M$UZn  
  width = 3, 3{9d5p|\i  
  style = fdashed, w:07_`cH=  
  "n3 (%, right scale)" Sjo7NR^#e  
yZkS   
d;.H 9Ne  
; ------------- VMH^jCFp  
diagram 2:                    ！输出图表2 t4Pi <m:7  
DIF-%X5  
"Variation ofthe Pump Power" ~}RfepM  
)W*A[c 2  
x: 0, 10 r$W%d[pB  
"pump inputpower (W)", @x aKz:hG  
y: 0, 10 OxqkpK&  
y2: 0, 100 k8z1AP  
frame bW^C30m  
hx % O u'+A  
hy a!B"WNb+  
legpos 150, 150 q![`3m-d.  
OXI>`$we  
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 :*Y2na)qQ  
  step = 5, Y&-% N  
  color = blue, *" +u^  
  width = 3, "{[\VsX|c  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 ?OS0.  
  finish set_P_in(pump, P_pump_in) ||4T*B06  
*USG p<iH  
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 ZlP+t>  
  yscale = 2, F}?4h Dt  
  step = 5, <.&84c]/&  
  color = magenta, (dTQ,0  
  width = 3, oI-,6G}  
  "population of level 2 (%, rightscale)", 33g$mUB  
  finish set_P_in(pump, P_pump_in) &O#,"u/q`  
qHn X)  
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 B>g(i=E  
  yscale = 2, H*Tzw,f~ v  
  step = 5, Ll .P>LH  
  color = red, QD%!a{I  
  width = 3, jl5&T{z  
  "population of level 3 (%, rightscale)", +t3o5&  
  finish set_P_in(pump, P_pump_in) " =6kH,  
^h^.;Iqr=  
(e Ssx/  
; ------------- d/!\iLF  
diagram 3:                         ！输出图表3 7}vI/?r  
\440gH`  
"Variation ofthe Fiber Length" OrwVRqW-z  
DTG-R>y^  
x: 0.1, 5 k-^le|n9  
"fiber length(m)", @x Ph8@V}80"Y  
y: 0, 10 ;Y0M]pC  
"opticalpowers (W)", @y 4AMe>s  
frame SP/'4m  
hx :$0yp`k  
hy Lv#0-+]$Bt  
"c\WZB`|  
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 &gKDw!al  
  step = 20,             xkv%4H>  
  color = blue, W^)mz,%x  
  width = 3, `QtkC>[  
  "signal output" %uCsCl  
^`k;~4'd  
;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 U.X` z3q  
   step = 20, color = red, width = 3,"residual pump" U$Z<lx2P  
u /]P  
! set_L(L_f) {restore the original fiber length } S`$%C=a.  
| 1zfXG,R  
Tdm|=xI  
; ------------- (cyvE}g  
diagram 4:                                  ！输出图表4 KIp^| k7>  
'v9M``  
"TransverseProfiles" *ow`}Q  
Q6D>(H#"0  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) R:$E'PSx  
s1h|/7gG  
x: 0, 1.4 * r_co /um r8?p6E  
"radialposition (µm)", @x 8&M<?oe  
y: 0, 1.2 * I_max *cm^2 |L`U2.hb  
"intensity (W/ cm&sup2;)", @y (Gw*x sn1  
y2: 0, 1.3 * N_Tm YC')vv3o(  
frame $v #  
hx ]tf`[bINP  
hy k1oJ<$ Q  
= pn;b1=  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 ;S \s&.u  
  yscale = 2, :P/VBXh  
  color = gray, m#8(l{3|  
  width = 3, I;-Y2*  
  maxconnect = 1, GcDA0%i  
  "N_dop (right scale)" 2x9.>nwhb  
@&Z^WN,x  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 -gm5E qi  
  color = red, c?e-2Dp(  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 {kw% 7}!  
  width = 3, :"MHmm=uU8  
  "pump" AH:uG#  
G%FZTA6a  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 Le:C8^  
  color = blue, ' tY(&&  
  maxconnect = 1, \pfa\, rW  
  width = 3, q&J5(9]O|L  
  "signal" 9 :Oz-b  
vi *A 5  
]XbMqHGS  
; ------------- 3qn_9f]  
diagram 5:                                  ！输出图表5 ,dR.Sac v  
y: x<`E=  
"TransitionCross-sections" zWhj >Za  
qFwt^w  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) n@xQ-v  
M:GpyE%  
x: 1450, 2050 ]95VM yN  
"wavelength(nm)", @x Rx&O}>"E>l  
y: 0, 0.6 nH&z4-1Y?  
"cross-sections(1e-24 m&sup2;)", @y ~abyjM  
frame `_)H aF>/  
hx Vy I\Jmr  
hy n0T|U  
g i6s+2  
f: s12_Tm(x * nm) /1e-24,      ！Tm3+吸收截面与波长的关系 &>C+5`bg  
  color = red, [U/h'A.j  
  width = 3, P%lD9<jED  
  "absorption" E`I(x&_  
f: s21_Tm(x * nm) /1e-24,  ！Tm3+发射截面与波长的关系 6ICW>#fI`  
  color = blue, QMz=e  
  width = 3, 4pf@.ra,  
  "emission" 't}\U&L.{  
Y&j`HO8f  
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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