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> Coherent infinity laser nd:yag 1064NM dpss diode pumped
Coherent infinity laser nd:yag 1064NM dpss diode pumped
COHERENT INFINITY LASER Nd:Yag 1064nm DPSS DIODE PUMPED
Coherent Infinity-1064 ND:YAG Laser Unit
This is a tested working unit, however, the laser output power is lower than a new laser. Due to usage and age.
Coherent Infinity Master Oscillator features:
1064nm wavelength, diode pumped solid state laser (DPSS)
Ring laser capable of being operated as an ultra low noise, unidirectional ring laser [VERY SPECIAL FEATURES]
Complex laser head packed with features and most of the electronics needed for the laser [VERY SPECIAL FEATURES]
Q-switched, or CW (may not be unidirectional, though should be possible)
Single mode in every way, including single longitudinal mode [VERY SPECIAL FEATURES]
Miniature diode pumped solid state ring laser (the whole cavity is less than 2" long), trapezoidal shaped Nd:YAG crystal, using only two mirrors to form the ring cavity [VERY SPECIAL FEATURES]
Sealed/protected cavity/optics [VERY SPECIAL FEATURES]
Unique mode of unidirectional operation via RF driving of an intracavity acousto optic q-switch/modulator, no Faraday rotator/magnetic fields [VERY SPECIAL FEATURES]
Integrated electronics for most of the system:
diode laser temperature controller, diode laser power supply, acousto optic RF driver (80 MHz), cavity stabilization/pre-lasing/locking circuitry, Nd:YAG temperature controller, photo-diode monitor circuitry, power filtering, etc...
When fully working and properly driven, this laser is capable of operation up to at least 100Hz rep rate, with a pulse length of less than 5 nano seconds [VERY SPECIAL FEATURES]
The Q-switched output could be frequency doubled to 532nm (tripling and quadrupling into the UV, is also possible). [SPECIAL FEATURE]
This laser is part of a much larger system made by Coherent. It was meant to serve as the "master oscillator," providing seed pulses to a much larger flash lamp pumped laser amplifier. [VERY SPECIAL FEATURES]
The crystal, optics, pump diode, assemblies and electronics in this laser are worth many thousands of dollars at a minimum.
laser has been tested and does lase, though does not meet full specifications
25mW cw output observed at 1500 ma of pump diode current (this is far below specifications)
with a new pump diode we estimate that the system can probably do at least 250mW
Q-switch appears not to work (thus unidirectional operation is hampered, until this is fixed)
Coherent Infinity test results:
- Laser diode is functional; power is lower than normal, output power is not stable (due to on-board laser control circuitry not being correctly driven by a separate system controller)
Current draw oscillates on 24v supply
Q-switch is dead or non-functional (probably needs to be replaced)
Q-switch driver; unable to test, but seems operational (it does draw power)
Nd:YAG Laser Characteristics, for the following pump Laser Diode currents:
Opto Power OPC-PS06-A Laser diode driver connected to laser diode directly though J6 (LD). Red wire is +, Orange is -.
Tektronix AFG310 Function generator driving a Rohde&Schwarz Signal Generator amplified by AR10W1000 amplifier directly connected to Q-Switch.
HP6034L Power supply @ 24v. Pin 6 on DB15 on power board is 0v; pin 13 is +24v.
HP6255 Power supply paralleled @5v. Outer pins on Molex connector on power board are +5v; the two center pins are 0v.
This laser is perfect for a university, laser researchers, laser physicists/engineers, or a skilled laser hobbyist.
ONLY FOR EXPERIENCED LASERS USERS AWARE THAT THIS LASER IS NOT A TOY AND CAN BLIND AND/OR HURT PEOPLE IF MISUSED AND CDRH/ANSI/IEC LASER SAFETY PRECAUTIONS ARE NOT ENFORCED WHEN THE LASER IS OPERATING
