Date: Tue, 04 Sep 2001 12:13:12 -0500

Author: Cliff Bettis

Subject: Re: Please help me spend some $$ - need vacuum pump

Post:

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Roger,=0D=0A=0D=0A=0D=0AThe equipment I used was:=0D=0A=0D=0APower Te=
chnology Inc. ML20A15 Pulsed Diode Laser (20 W peak, 905 nm, $650)=
=0D=0ATektronix TDS3014 'scope (about $3K as I recall, got it at a di=
scount)=0D=0AThorlabs PDA155 amplified photodetector=0D=0ARetroreflec=
tor array from auto parts store (a few bucks)=0D=0A=0D=0AI also used =
an older Thorlabs PDA50 which wasn't as fast as the PDA155 but a bit =
more sensitive. I am still planning on seeing if I can come up with c=
heaper detectors (the PDA155 is about $300 as I recall)=0D=0A=0D=0AWe=
made the p
ower supply/ TTL pulser for the laser here.=0D=0A=0D=0ACliff=0D=0A -=
---- Original Message ----- =0D=0A From: Roger Key =0D=0A To: tap-l=
@listproc.appstate.edu =0D=0A Sent: Tuesday, September 04, 2001 11:2=
5 AM=0D=0A Subject: Re: Please help me spend some $$ - need vacuum p=
ump=0D=0A=0D=0A=0D=0A I missed that, but could use the model number =
if anyone has it.=0D=0A=0D=0A Cliff - what about those electronics y=
ou were using for the speed of light demo?=0D=0A (you know, the $300=
detectors and so on?)=0D=0A=0D=0A - Roger=0D=0A=0D=0A At 10:20 AM =
9/4/2001 -0500, you wrote:=0D=0A
=0D=0A Roger,=0D=0A=0D=0A Did you see Sammy's awesome vacuum sy=
stem at Rochester? I have a proposal in=0D=0A the works here to ma=
ke a version of it here.=0D=0A=0D=0A Cliff=0D=0A=0D=0A ----- Or=
iginal Message -----=0D=0A From: "Roger Key" >=0D=0A To: =0D=0A Sent: Tuesday, =
September 04, 2001 9:47 AM=0D=0A Subject: Re: Please help me spend=
some $$ - need vacuum pump=0D=0A=0D=0A=0D=0A > Tappers:=0D=0A =
>=0D=0A > anyone have a recommendation for a lecture vacuum pump?=
=0D=0A >=0D=0A > something that
can easily be carried up and down about 4 stairs would be=0D=0A n=
ice.=0D=0A >=0D=0A > Thanks,=0D=0A >=0D=0A > -Roger=0D=
=0A =3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=
=3D+=3D=0D=0A Roger Key roger=
k@csufresno.edu=0D=0A California State University, Fresno =
phone 559-278-2728=0D=0A Department of Physics MH#37 =
paper fax 559-278-7741=0D=0A 2345 E San Ramo=
n Ave =0D=0A Fresno CA 93740-8031 =
=0D=0A=0D=0A Physics Department Web Pag
e: http://physics.csufresno.edu=0D=0A Downing Planetariu=
m Web Page: http://www.Downing-Planetarium.org=0D=0A Physics In=
structional Resource Association: http://www.pira.nu=0D=0A=
=0D=0A=0D=0A=00=00=00=00=00=00=00=00=00=00=00=00=00=00=00=00=00=00=
=00=00=00=00=00=00=00=00=00=00=00=00=00=00=00=00=00=00=00=00=00=00=
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=0D=
=0A=0D=0A html; charset=3Diso-8859-1">=0D=0A 800" name=3DGENERATOR>=0D=0A=0D=0A=0D=0A gColor=3D#ffffff>=0D=0A

Roger,
=0D=
=0A
 
=0D=0A
<=
/FONT> 
=0D=0A
The equipment I used was:=
=0D=0A
 
=0D=0A
=
Power Technology Inc. ML2
0A15 Pulsed Diode Laser (20 W peak, =0D=0A905 nm, $650)
=
=0D=0A
Tektronix TDS3014 'scope (about $3K as I re=
call, got it at a =0D=0Adiscount)
=0D=0A
=3D2>Thorlabs PDA155 amplified photodetector
=0D=0A
<=
FONT size=3D2>Retroreflector array from auto parts store (a few =0D=
=0Abucks)
=0D=0A
 
=
=0D=0A
I also used an older Thorlabs PDA50 which w=
asn't as fast as =0D=0Athe PDA155 but a bit more sensitive. I am stil=
l planning on
seeing if I can come =0D=0Aup with cheaper detectors (the PDA155 is =
about $300 as I recall)
=0D=0A
=
 
=0D=0A
We made the power supply/ TTL p=
ulser for the laser =0D=0Ahere.
=0D=0A
=3D2> 
=0D=0A
Cliff
=
=0D=0A
G-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN=
-RIGHT: 0px">=0D=0A
----- Original M=
essage ----- DIV>=0D=0A
al; font-color: black">From: =0D=0A no.edu href=3D"mailto:rogerk@csufresno.edu">Roger Key =0D=0A IV>=0D=0A
To: l@listproc.appstate.edu =0D=0A href=3D"mailto:tap-l@listproc.appstat=
e.edu">tap-l@listproc.appstate.edu
=0D=0A
=0D=0A
le=3D"FONT: 10pt arial">Sent: Tuesday, September 04, 2001 11:2=
5 =0D=0A AM
=0D=0A
Subject:=
Re: Please=20
help me spend some $$ =0D=0A - need vacuum pump
=0D=0A
R>
I missed that, but could use the model number if anyone has =
=0D=0A it.

Cliff - what about those electronics you were usin=
g for the speed =0D=0A of light demo?
(you know, the $300 detecto=
rs and so on?)

- =0D=0A Roger

At 10:20 AM 9/4/2001 -05=
00, you wrote:
=0D=0A
>Roger,

Did you see Sammy's =0D=0A awesome vacuum system at=
Rochester? I have a proposal in
the works here =0D=0A to ma
ke a version of it here.

Cliff

----- Original Message =
=0D=0A -----
From: "Roger Key" <rogerk@csufresno.edu>
=
To: =0D=0A <tap-l@listproc.appstate.edu>
Sent: Tuesday, S=
eptember 04, 2001 =0D=0A 9:47 AM
Subject: Re: Please help me sp=
end some $$ - need vacuum =0D=0A pump


> Tappers:
=
>
> anyone have a recommendation =0D=0A for a lecture vac=
uum pump?
>
> something that can easily be =0D=0A carr=
ied up and down about 4 stairs would be
nice.
&g
t;
> =0D=0A Thanks,
>
> -Roger
GSEP>=0D=0A

    =0D=0A =3D+=3D+=
=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D+=3D
 &nbs=
p;           &=
nbsp;          &nbs=
p; =0D=0A Roger =0D=0A Key       =
;       =0D=0A rogerk@csufresno.edu >California State University, =0D=0A Fresno    &=
nbsp;   
        =0D=0A phone 559-278-2728=

        Department of =0D=0A =
Physics =0D=0A MH#37        =
    paper =0D=0A fax =0D=0A 559-278-7741
 &n=
bsp;           =
;  =0D=0A 2345 E San Ramon =0D=0A Ave    &=
nbsp;           =
=0D=0A
        &nbs
p;      =0D=0A Fresno CA =0D=0A 93740-8031=
           &nb=
sp;    =0D=0A

Physics Department Web =0D=0A =
Page:          &nbs=
p;  =0D=0A dora=3D"autourl">http://physics.csufresno.edu
Downing Planetar=
ium Web =0D=0A Page:      =3D"http://www.downing-planetarium.org/" =0D=0A eudora=3D"autourl">h=
ttp://
www.Downing-Planetarium.org

Physics =0D=0A Instructional Reso=
urce Association:        =0D=0A <=
A href=3D"http://www.pira.nu/" =0D=0A eudora=3D"autourl">http://www.=
pira.nu

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