The feedback has been good in the Lasers, All Kinds thread, so here are some of these modules for sale to help fund future laser projects and of course food.
History: This module is a refinement of a concept that chad and I worked on back in 2007. Back then, we took advantage of the simplicity of the combination of a finned tube with an aixiz module inside as the basis for a laser module. The downside to using the aixiz module in a tube approach were twofold: the quality control from batch to batch led to variations in fit of the lens, diode and housing and secondly the low copper content brass material that the aixiz module is composed of is not the best conductor of heat away from the diode. The alternative was to machine a diode and lens holder from scratch to specifications.. although more expensive, this method has better thermal characteristics for pulling heat from the diode, and better quality control. I think the result speaks for itself.
Details:
Optical:
Diode: Optnext 642nm 150mW HL6385DG
Exit beam: approx 2.2mm
Divergence: <0.8mRad
Output power: 120mW (130-140mW with LENS option)
Polarization: H or V, per request. Pairs one of each.
Mechanical:
Height adjustment: 1" to 2.25"
Lateral Ajustment: 1.25"
Rotational adjustment: 150 degrees Y 360 X
Dimensions: 2.75" L x 2.25" W x 2.5" H
Electrical:
Power input: 5-12V, 300mA
Static protection: LASORB in body
Driver: FlexMod N2
TEC Cooling: optional (TEC option)
Modulation: 0-5V analog/TTL
Bandwidth: DC-250kHz
cost: $279
This wavelength appears twice as bright as the typical 655nm wavelength of dvd burner diodes while not appearing as orange as 635nm lasers. At the same time, this diode is rated at 150mW CW, the same as most dvd burner diodes that accept being over driven to 200mW, indicating that future study into the maximum output power verses long lifetime of this diode is warranted. A pair of these would be roughly equivalent to a 700mW 670nm, but these would have tight beam specs.
It's exciting to finally have this come to fruition. I think it will be a good host for upcoming wavelengths as well
Thanks to Pango for creating the LASORB, and PL for inspiration to keep working with lasers!
Please send a PM if youre interested. I'll be at SELEM so let me know ahead of time if you want me to bring some for you.
thanks!