Just added laser #96 to my collection, the oldest laser pointer made with a diode laser. The Holo-Spectra model HSD-1 "Spot" featured a Toshiba 670nm diode laser with an output power of about a milliWatt. It's 8.5" long, 1" diameter, weighs 7oz, has a rechargeable Ni-Cd battery, includes a battery charger, and originally cost $495.
Holo-Spectra is well known to all old time laser and holography professionals and amateurs. I bought my first spatial filter and other holography equipment from the Arkin brothers in '81. They began production of "Spot" in 1989, and followed it over the next couple years with three more models based on larger Toshiba 670nm diodes (up to 3mW).
This particular unit includes the original handwritten receipt and instructions in the original box. It was bought in March 1990 by Jerry Fox of White Light Works, a well known distributer of holograms and hologram related products throughout the '80s and into the '90s. I knew Jerry well back then, did work for him and miss him since he passed away way too early in the mid-'90s. What a great surprise it was to see his company's name on this receipt! I'm really, really happy to have this laser pointer in my collection.
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