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Apr
11
revised Non-semiconductor CW laser types for 445-465nm
added 1 character in body
Apr
11
comment Non-semiconductor CW laser types for 445-465nm
@CuriousOne I assume line of the atom itself and line in practical crystal is different. Also, not every line could be realized in a crystal and finally not every line is suitable for a laser... So it might be extremely hard to get to practical system from this list...
Mar
20
accepted Low-cost 532nm DPSS laser modulation
Mar
20
accepted Spectrum of generic $\mathrm{CO_2}$ laser
Mar
20
asked X-ray energy and green intensifying screens
Mar
14
accepted Quantim efficiency of a radio receiver
Mar
13
asked Non-semiconductor CW laser types for 445-465nm
Mar
11
awarded  Popular Question
Jan
25
asked Quantim efficiency of a radio receiver
Oct
25
awarded  Nice Question
Oct
7
awarded  Nice Question
Aug
25
awarded  Enlightened
Aug
25
awarded  Nice Answer
Jul
30
comment What causes this IR emission in UV 365nm LED?
@boyfarrell You was right, apparently strong signals make sensor non-linear, so software processing was removing harmonics not perfectly.
Jul
30
comment What causes this IR emission in UV 365nm LED?
It seems harmonic suppression is in software? Due to different sensitivity between IR and UV strong signals might saturate the sensor and make correct software processing impossible...
Jul
30
comment What causes this IR emission in UV 365nm LED?
It appears there is indeed significant non-linearities involved when suppressing strong harmonics. Weaker signal somehow does not produce this "ghost" IR...
Jul
30
comment What causes this IR emission in UV 365nm LED?
That was quite unusual... I was able to replicate the situation where IR peak was removed by IR-cut filter, but IR-pass (680nm+) filter does not show anything behind it...
Jul
30
accepted What causes this IR emission in UV 365nm LED?
Jul
29
accepted Stimulated emission in Nd:silica glass, energy levels broadening and lasers
Jul
28
comment What causes this IR emission in UV 365nm LED?
Physics of 1064nm and 808nm leakage in 532nm lasers is completely clear to me (808nm diode pump, 1064nm from Nd:YVO4 not converted by non-linear crystal). In this case there is an LED, not a laser, so I am in doubt there might be something similar.