DrMario
0
- Joined
- Oct 19, 2013
- Messages
- 245
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- 18
Like it says in thread header; it's more of a thought. :thinking:
I was wondering whether if it's possible to use the green - blue Gallium-Nitride laser diodes which are nowadays powerful and cheap (true blacklight laser diode is of course prohibitively expensive so I won't bother covering it here, only those cheaply available to us as of now, including the exotic 510 - 490nm laser. And yes, Blu-ray Disc burner 405nm laser diodes still also qualify as the role for them here is to pump the dye to lasing threshold).
As for the 520 - 395nm pump laser range and availability, I would focus on both Rhodamine and Fluorescein dyes (even though dyes from green - red liquid glow in the dark stick and highlighter marker are a possible candidate), due to the absorption bands, you want the emission band wavelength to be two - three times longer than the pump band wavelength - eg. 605nm yellowish-orange lasing line via Rhodamine dye in the tunable cavity curvette pumped by 520 - 510nm laser diode (with optical correction, of course - if you have a green VCSEL, you may get away with using fewer optical lenses than with Fabry-Perot laser diodes due to the nature of the optical cavity therein). The bigger consideration of course is with the absorption wavelength of the dye (never hurt to check the datasheet), as there's no such thing as free lunch (ie. it's hard to make all-compassing multi-wavelength dye laser), so I would also recommend to make it so the laser diodes are easily removable and replaceable if you make that into the lab laser, that way you can handle multiple dyes.
Yes, I would like to build the diode-pumped dye lab laser, however metal is expensive so I will have to see what options I have in meanwhile. (Metal is preferable so I can be sure I get the optical configuration right or it would be a poor excuse of a laser.)
I was wondering whether if it's possible to use the green - blue Gallium-Nitride laser diodes which are nowadays powerful and cheap (true blacklight laser diode is of course prohibitively expensive so I won't bother covering it here, only those cheaply available to us as of now, including the exotic 510 - 490nm laser. And yes, Blu-ray Disc burner 405nm laser diodes still also qualify as the role for them here is to pump the dye to lasing threshold).
As for the 520 - 395nm pump laser range and availability, I would focus on both Rhodamine and Fluorescein dyes (even though dyes from green - red liquid glow in the dark stick and highlighter marker are a possible candidate), due to the absorption bands, you want the emission band wavelength to be two - three times longer than the pump band wavelength - eg. 605nm yellowish-orange lasing line via Rhodamine dye in the tunable cavity curvette pumped by 520 - 510nm laser diode (with optical correction, of course - if you have a green VCSEL, you may get away with using fewer optical lenses than with Fabry-Perot laser diodes due to the nature of the optical cavity therein). The bigger consideration of course is with the absorption wavelength of the dye (never hurt to check the datasheet), as there's no such thing as free lunch (ie. it's hard to make all-compassing multi-wavelength dye laser), so I would also recommend to make it so the laser diodes are easily removable and replaceable if you make that into the lab laser, that way you can handle multiple dyes.
Yes, I would like to build the diode-pumped dye lab laser, however metal is expensive so I will have to see what options I have in meanwhile. (Metal is preferable so I can be sure I get the optical configuration right or it would be a poor excuse of a laser.)