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

(* v_^>*Vm*  
Demo for program"RP Fiber Power": thulium-doped fiber laser, 0+S ;0  
pumped at 790 nm. Across-relaxation process allows for efficient ~P!\;S  
population of theupper laser level. =`<9N%  
*)            ！（*  *）注释语句 lidVe]>  
k6eh$*!  
diagram shown: 1,2,3,4,5  ！指定输出图表 r c++c,=  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 `st3iTLZY  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 JX!z,X?r4  
; 3:"Variation of the Fiber Length"！信号输出功率vs 光纤长度的变化，仿真最佳光纤长度 %vn"tp  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 wH]5VltUT1  
; 5:"Transition Cross-sections"    ！不同波长的跃迁横截面，横坐标波长，纵坐标为横截面 p.@
kv  
Y]!WPJ`f2  
include"Units.inc"         ！读取“Units.inc”文件中内容 y[`>,?ns5  
T8^`<gr.  
include"Tm-silicate.inc"    ！读取光谱数据 {:;6 *W  
wCQ.?*7-9Q  
; Basic fiberparameters:    ！定义基本光纤参数 Dxvizd>VU  
L_f := 4 { fiberlength }      ！光纤长度 aFw \w>*^  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注
6&* z  
r_co := 6 um { coreradius }                ！纤芯半径 ==#mlpi`S[  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 -XASS%  
@tT2o@2Y^  
; Parameters of thechannels:                ！定义光信道 ~#MXhhqB  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm wE~&Y
?^  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 M:M"7>:  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W m+|yk.md  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um MD98N{+[|  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 mP*Ct6628n  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 #nq$^H  
$U=j<^R}a  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm "
f~*4g  
w_s := 7 um                          ！信号光的半径 ~n=oPm$pR  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 !P8Y(i  
loss_s := 0                            ！信号光寄生损耗为0 ^V}c8 P|  
O,PTY^  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 F5y0(=$T  
:X*$U ~aQ  
; 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 +lplQ
h@RB  
calc
O2qy[]km  
  begin AXpg_JC  
    global allow all;                   ！声明全局变量 yQcIfl]f  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 k*4!rWr0r&  
    add_ring(r_co, N_Tm); DuQW?9^232  
    def_ionsystem();              ！光谱数据函数 \/s0p  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 XjXz#0nR  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 7!F -.kG  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 BaVooN~C  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 #=V\WQb  
    finish_fiber();                                   =4[ U<opP  
  end; xs6kr  
e_YTh^wU  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 =odKi"-6  
show "Outputpowers:"                                   ！输出字符串Output powers： QXu[<V  
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） M3G ecjR  
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） vw6>eT  
~KQiNkA\|l  
B3|G&Kg  
; ------------- Q7#t#XM  
diagram 1:                   !输出图表1 [
*J?TNk  
dY{qdQQ}  
"Powers vs.Position"          ！图表名称 `mthzc3W  
11vAx9  
x: 0, L_f                      ！命令x: 定义x坐标范围 Mt4*`CxtH;  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 k4PXH  
y: 0, 15                      ！命令y: 定义y坐标范围 I5@8=rFk  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 *C);IdhK%y  
frame          ！frame改变坐标系的设置 $0gGRCCG;  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） :K~sazs7J  
hx             ！平行于x方向网格 sd9b9?qiu  
hy              ！平行于y方向网格 "l{{H&d  
p9 G{Q  
f: P(pump, x),    ！命令f: 定义函数图；P(pump, x)函数是计算x位置处的泵浦光功率 Jot7 L%,TB  
  color = red,  ！图形颜色 4T]A! y{  
  width = 3,   ！width线条宽度 6e S~*  
  "pump"       ！相应的文本字符串标签 uPy5<c  
f: P(signal_fw, x),  ！P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 .}5qi;CA  
  color = blue,     D*>#]0X  
  width = 3, 6zi 5#23  
  "fw signal" |- <72$j  
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 1Va=.#<  
  color = blue, 34QW^{dgE  
  style = fdashed, ^T*!~K8A  
  width = 3, Vr@tSc&  
  "bw signal" Qz89=#W  
~{GTL_w  
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 ({zWyl  
  yscale = 2,            ！第二个y轴的缩放比例 6L;]5)#
 
  color = magenta, &>!-67  
  width = 3, Cmp5or6d  
  style = fdashed, (_]!}N  
  "n2 (%, right scale)" ~0h@p4  
*+XiBho  
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 :dQRrmM  
  yscale = 2, q6ZewuV.  
  color = red, +v~x_E5FP  
  width = 3, /~Bs5f.]?  
  style = fdashed, JVGTmS[3  
  "n3 (%, right scale)" sjOv!|]A  
G3 |x%/Fbp  
UM`{V5NG#  
; ------------- O c.fvP^ZD  
diagram 2:                    ！输出图表2 D2GF4%|  
1]9w9!j  
"Variation ofthe Pump Power" -k@1#c+z  

EDuH+/:n  
x: 0, 10 w5^k84vye  
"pump inputpower (W)", @x 0@[*~H
0{n  
y: 0, 10 /M'd$k"0z  
y2: 0, 100 I:HrBhI)wP  
frame Dw.I<fns^B  
hx "h #
/b}/  
hy )&O6d .  
legpos 150, 150 [?hvx}  
xjSzQ|k-  
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 ~ g-(  
  step = 5, 0b/@QgJ  
  color = blue, & Zn`2%  
  width = 3, AloL+eN@  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 alB'l  
  finish set_P_in(pump, P_pump_in) e(N},s:_  
`N&*+!O%  
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 wdAKU+tM  
  yscale = 2, "*t0 t  
  step = 5, W9pY=9]p+  
  color = magenta, ,Tu.cg  
  width = 3, ;c>"gW8  
  "population of level 2 (%, rightscale)", ks\q^ten  
  finish set_P_in(pump, P_pump_in) w@&z0ODJ  
Y9|!=T%  
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 jf-XVk5q  
  yscale = 2, o&&`_"18  
  step = 5, Yku6\/^  
  color = red, \|9B:y'y  
  width = 3, NJ+$3n om  
  "population of level 3 (%, rightscale)", _"Z?O)d*  
  finish set_P_in(pump, P_pump_in) +7o1&D*v  
c|JQ0] K  
BWQ`8
 
; ------------- qHp2;  
diagram 3:                         ！输出图表3 :o~'\:/  
4sntSlz)~k  
"Variation ofthe Fiber Length" !'~Ldl  
ZG2EOy  
x: 0.1, 5 CQNMCYjg(R  
"fiber length(m)", @x sT"IC
ooc  
y: 0, 10 l^}u S|c(  
"opticalpowers (W)", @y ||Owdw
|{  
frame < K
!r\
^  
hx 1U#W=Fg'  
hy ;y. ;U#O  
qD4s?j-9  
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 xEurkR  
  step = 20,             ;4ybkOD  
  color = blue, #O!2
 
  width = 3, Pj]^p{>  
  "signal output" R.*;] R>M  
|'1.ajxw  
;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 <Vk}U   
   step = 20, color = red, width = 3,"residual pump" Za1mI^ L1  
B*mZxY1  
! set_L(L_f) {restore the original fiber length } |" WL  
?8{Os;!je  
hHTt-x#  
; ------------- ULxQyY;32  
diagram 4:                                  ！输出图表4 !L{mE&  
|9%~z0  
"TransverseProfiles" f.uuXK  
n}F$kyI  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) V\x'w*FP  
']eN4H&=?}  
x: 0, 1.4 * r_co /um }=)u_q  
"radialposition (µm)", @x \fEG5/s}T  
y: 0, 1.2 * I_max *cm^2 H390<`  
"intensity (W/ cm&sup2;)", @y __xmn{{L6P  
y2: 0, 1.3 * N_Tm l"E{ ?4  
frame iB(?}SaAZ  
hx &hkD"GGe  
hy 5hy7}*dR  
H[p~1%Lq  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 [KYq01cj  
  yscale = 2, :AFW=e@<  
  color = gray, e|~{X\l  
  width = 3, L!l?tM o  
  maxconnect = 1, H @k}  
  "N_dop (right scale)" L`K)mCr  
C(v'7H{4cW  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 *5BVL_:~J  
  color = red, -XL
?n/M  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 (^FMm1@T  
  width = 3, ?m2FN<S  
  "pump" Y\_mqd  
XrTc5V  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 Z0zEX?2mb  
  color = blue, FT~c|ep.  
  maxconnect = 1, 9ThsR&h3  
  width = 3, 4y+hr  
  "signal" ;kZD>G
8  
EiC["M'}  
Y=<ABtertS  
; ------------- @HMH>;haE  
diagram 5:                                  ！输出图表5 !p+rU
?  
ef{Hj[
8  
"TransitionCross-sections" d7b`X<=@s  
> `eo0  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) v"(6rZsa  
hlV(jz  
x: 1450, 2050 )E=B;.FH  
"wavelength(nm)", @x ,Aq, f$5V  
y: 0, 0.6 um]*nXIr  
"cross-sections(1e-24 m&sup2;)", @y
|>U<EtA"  
frame ld(_+<e  
hx T<7}IH$6xE  
hy Q$.CtECo  
`_Iyr3HAf  
f: s12_Tm(x * nm) /1e-24,      ！Tm<sup>3+</sup>吸收截面与波长的关系 A ;`[
va  
  color = red, i=b'_SZ'  
  width = 3, |AvsT{2  
  "absorption"  !vl1#@  
f: s21_Tm(x * nm) /1e-24,  ！Tm³⁺发射截面与波长的关系 `{"V(YMEV  
  color = blue, >^9j>< Z  
  width = 3, 5?>Q[a.Ne  
  "emission" Lp$&eROFVs  
2xuU[  

感谢，视频上有点看不清楚