[原创]RP Fiber Power仿真设计掺铥光纤激光器代码详解 [复制链接]

(* hXPocP  
Demo for program"RP Fiber Power": thulium-doped fiber laser,
jwq\stjD  
pumped at 790 nm. Across-relaxation process allows for efficient 8Kk3_ y  
population of theupper laser level. lD-V9   
*)            ！（*  *）注释语句 7|K3WuLL  
\w3%[+c  
diagram shown: 1,2,3,4,5  ！指定输出图表 >eRZ+|k?N  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 ]
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; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 `,Xb8^M2  
; 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 -E}>h[;qZ  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 NWb} OXK/  
; 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 xM%`KP.8X  
ZWFG?8lJ  
include"Units.inc"         ！读取“Units.inc”文件中内容 _/ct=  
</|)"OD9  
include"Tm-silicate.inc"    ！读取光谱数据 })KJ60B  
M5F(<,n;  
; Basic fiberparameters:    ！定义基本光纤参数 ,%[LwmET  
L_f := 4 { fiberlength }      ！光纤长度 ) b
/n)%6  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 Ri;=aZ5m  
r_co := 6 um { coreradius }                ！纤芯半径 xv^Sh}\}  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 !O 4<I_EY{  
AvyQ4xim+  
; Parameters of thechannels:                ！定义光信道 TNJ<!6  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm '7t|I6$ow  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 -%>8.#~G  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W E2kW=6VO>|  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um `bzr_fJ  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布
9LH=3Qt  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 Jc`Rs"2  
i3D<`\;r  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm d3Y(SPO  
w_s := 7 um                          ！信号光的半径 Wgav>7!9  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 F%9cS :  
loss_s := 0                            ！信号光寄生损耗为0 |MR%{ZC^i  
/731.l  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 jYrym-  
P87ld._  
; 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 L'13BRu`  
calc d[)_sa  
  begin `'*F1F  
    global allow all;                   ！声明全局变量 y+?=E g  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 CdDH1[J  
    add_ring(r_co, N_Tm); kNRyOUy  
    def_ionsystem();              ！光谱数据函数 HmhU
c,EC  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 c/b%T  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 5.O-(eSa0&  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 mPckf  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 `E{;85bDH  
    finish_fiber();                                   y*}AX%8`e~  
  end; cT_uJbP+  
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; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 sk~za  
show "Outputpowers:"                                   ！输出字符串Output powers： U&,r4>V@h>  
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） F='Xj@&O  
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） B{;11u  
wDB
)&b  
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; ------------- 9cVn>Fb  
diagram 1:                   !输出图表1 uFGv%W  
N =x]AC,  
"Powers vs.Position"          ！图表名称 4Sg<r,G  
^Yf3"D?&  
x: 0, L_f                      ！命令x: 定义x坐标范围 o,g6JTh  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 DhY;pG,t  
y: 0, 15                      ！命令y: 定义y坐标范围 hm*Th  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 Y*`:M(  
frame          ！frame改变坐标系的设置 /uC+.B9k  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） lO551Y^  
hx             ！平行于x方向网格 F"-S~I7'L  
hy              ！平行于y方向网格 Nn
J>0|74g  
PXOrOK  
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 h |s*i  
  color = red,  ！图形颜色 )W[KD,0+j  
  width = 3,   ！width线条宽度 'u4}t5Bu5  
  "pump"       ！相应的文本字符串标签 oN.Mra]D  
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 ^fA3<|  
  color = blue,     Sja"(sJ  
  width = 3, Z|]l"W*w  
  "fw signal" [P.@1mV  
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 C*"Rd   
  color = blue, vs5 D:cZ}  
  style = fdashed, `Mo~EHso.  
  width = 3, EZ:I$X  
  "bw signal" &i4 (s%z#  
6&g!ZE'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 WpZy](,  
  yscale = 2,            ！第二个y轴的缩放比例 Q'FX:[@x-S  
  color = magenta, M\:"~XW  
  width = 3, :GN)7|:  
  style = fdashed, &@mvw=d  
  "n2 (%, right scale)" ^JYF1  
>g5T;NgH9  
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 K?z*3^^X;  
  yscale = 2, j zxf"X-  
  color = red, 2&^,IIp  
  width = 3, (Q}PeKM?jq  
  style = fdashed, ]
3gYuz|  
  "n3 (%, right scale)" )OARO  
<wIp$F.  
`77;MGg*  
; ------------- S#dyRTmI  
diagram 2:                    ！输出图表2 !1ie:z>s  
rC=p;BC@dD  
"Variation ofthe Pump Power" [+%p!T  
m _t(rn~f6  
x: 0, 10 Pur"9jHa4  
"pump inputpower (W)", @x S+` !%hJ  
y: 0, 10 >i><s>=I`  
y2: 0, 100 !nP8ysB  
frame asm[-IB2u  
hx UiGUaBmF*  
hy htdn$kqG   
legpos 150, 150 -~rr<D\  
sqq/b9 uL/  
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 kMwIu
y  
  step = 5, :kf3_?9rc  
  color = blue, @B>%B EC  
  width = 3,
Ymrpf  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 @O  @|M'  
  finish set_P_in(pump, P_pump_in) \K4CbZ,.  
a=}">=]7  
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 U 8qKD  
  yscale = 2, ^>P@5gcoE(  
  step = 5, ;-<<1Jz/2  
  color = magenta, Sgjr4axu  
  width = 3, D_,_.C~O  
  "population of level 2 (%, rightscale)", N#2nH1C  
  finish set_P_in(pump, P_pump_in) % @^VrhS  
(rY1O:*S  
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 ;GSfN  
  yscale = 2, i?P]}JENM  
  step = 5, [nhLhl4S  
  color = red, E|8s2t  
  width = 3, Bv |jo&0n  
  "population of level 3 (%, rightscale)", Eo25ir%  
  finish set_P_in(pump, P_pump_in) K4VPmkG  
]0/~6f  
S+e-b'++?  
; ------------- TZ[Fu{gZ  
diagram 3:                         ！输出图表3 &Hp\("  
U_zpLpm^  
"Variation ofthe Fiber Length" c,[qjr#\>  
$[^ KCNB  
x: 0.1, 5 q4IjCu+  
"fiber length(m)", @x LcQ\?]w`]  
y: 0, 10 _UbR8  
"opticalpowers (W)", @y !O%f)v?  
frame XQ|j5]  
hx JOE{&^j  
hy 9g^./k\8%  
< 8W:ij.`  
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 hc4`'r;  
  step = 20,             '!|E+P-  
  color = blue, "b+3 &i|  
  width = 3, [/2@=Uh-  
  "signal output" tg m{gR  
7UEy L }N  
;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 []]LyWk  
   step = 20, color = red, width = 3,"residual pump" 9M-]~.O  
dT0z^SG  
! set_L(L_f) {restore the original fiber length } 94>7-d  
=4%WOI  
/[)P^L`  
; ------------- s-YV_  
diagram 4:                                  ！输出图表4 \FaB!7*~  
g275{2G9  
"TransverseProfiles" fPuQ,J2=  
-QHzf&D?  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) -iZjs  
neMe<jr  
x: 0, 1.4 * r_co /um >Gu>T\jpe.  
"radialposition (µm)", @x e715)_HD  
y: 0, 1.2 * I_max *cm^2 a0v1LT6  
"intensity (W/ cm&sup2;)", @y {7MgN'4  
y2: 0, 1.3 * N_Tm (UiH3Q9C]%  
frame $@ #G+QQ_  
hx E(K$|k_>  
hy <a/ZOuBzZ  
Y&!McM!Jw  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 c=c.p i"s  
  yscale = 2, I]S(tx!  
  color = gray, 0BU:(o
&  
  width = 3, qi5>GX^t]b  
  maxconnect = 1, $EHn;~w T  
  "N_dop (right scale)" '&L   
j2&OYg  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 p`V9+CA  
  color = red,  9%hB   
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 ]KII?{<k  
  width = 3, IU"!oM^  
  "pump" :~YyHX  
7}HA_@[  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 @RG3*3(  
  color = blue, OsuSx^}  
  maxconnect = 1,
6b5{  
  width = 3, KQy\l+\gM  
  "signal" a/xCl :=8q  
*g_>eNpXD  
!P3tTL!*L  
; ------------- IaZAP  
diagram 5:                                  ！输出图表5 jI pcMN<  
R5YtCw]i=  
"TransitionCross-sections" P_}_D{G  
\$++.%0  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) \>CBam8d  
*h8XbBZH  
x: 1450, 2050 Kof
-;T  
"wavelength(nm)", @x ,DsT:8  
y: 0, 0.6 &b:Zln.j  
"cross-sections(1e-24 m&sup2;)", @y m*WEge*$t  
frame <L[)P{jn?p  
hx e&I.kC"j6  
hy { l~T~3/i  
'3,JL!  
f: s12_Tm(x * nm) /1e-24,      ！Tm³⁺吸收截面与波长的关系 }T(q"Vf~  
  color = red, J!qEj{  
  width = 3, ku8Z;ONeH  
  "absorption" &]A1 _dy  
f: s21_Tm(x * nm) /1e-24,  ！Tm³⁺发射截面与波长的关系 /IR5[67  
  color = blue, 8&AorYw[  
  width = 3, m=b+V#4i(  
  "emission" I(eR3d:  
Xrs~ove1V  

感谢，视频上有点看不清楚