New OSRAM 488nm diode

[dnar]

I wonder if it could be done with superposition using lasers in the uv and ir range. Thinking like heterodyne for audio or radio. prob need a non linear mixing crystal. guess that is like dpss.

I like your thought process.

[mixedgas]

High power:
660 532 440

1320 doubled = 660
1064 doubled = 532

1320 mixed with 660 = ~440 nm

Steve

[SoulFeast]

There's always frequency doubled Ti:Sapph.

Or an OPO/OPA. Though these are nothing short of monstrously large.

Pending mirror quality, gain metal/lattice used, and pump wavelength .. anything is possible. Especially once you get into the picosecond domain.

[glorocks]

Been doing some checking- I got a one-off quote for $1K from a Canadian Osram distributor, have a couple of quotes from Ali-Baba I haven't checked yet. DTR says they "pop up" from time to time for $500, but says he doesn't have a reliable source.
The price is coming down a bit, but low demand and the fact that this wavelength is used in medical equipment is working against us. Looked for a 590 nM laser lately? Popular with dermatologists for skin ablation, and insurance companies have deep pockets- manufacturers know this. I suspect the same thing is going on with the 488.
It would be really cool if we could emulate the old Ar output with diodes, and we're getting closer. Mixing with dichroics would be expensive, but one can always use a prism.

[steve-o]

Is this the <100mw diode? It'd have to be greater than 300mw to be worth $1K imho.

[glorocks]

The current crop of Osram 488's are rated at 150 mW.

[mixedgas]

20-50 mW of 488 in the lab/biomedical world sets you back a minimum of 7,900$, Be it Argon, DPSS, Diode, etc. Pricing is based on what customers used to pay for a biomedical argon system. That price is not changing, and in fact its increasing.

Steve

[bridge]

we had this unit, but it is really expensive, only for research using, could't for lasershow for nowadays prices

[absolom7691]

I know this is probably a fruitless thread rez but... anymore news on these? Are they like male birth control pills (just a few years away *for the last 30 years*)?

[glorocks]

I know this is probably a fruitless thread rez but... anymore news on these? Are they like male birth control pills (just a few years away *for the last 30 years*)?

Frankly, I gave up. Mixedgas is right- they are getting more expensive, and I doubt there is any impetus to develop more powerful diodes.