785 NM SLM LASER (VBG DIODE; SM FIBER)

Item Code:
0785L-23A-NI-AT-NF
Product status:
Full production Product specifications are stable. Delivery time is predictable.
Availability:

Description
Single-frequency (SLM) 785 nm lasers are very popular in Raman spectroscopy. At this wavelength good fluorescence suppression is observed as many fluorophores simply are not excited in NIR range. Small footprint and +5VDC (USB typical) operating voltage is exactly what's needed for handheld portable devices. Integrated precision driver electronics ensure low-noise and very stable operation throughout the wide temperature range. 785 near-infrared radiation features low photon energy. VBG technology delivers the low-cost solution to sophisticated Raman spectroscopy needs.
Specifications
Last edited on:  23 September 2019
Parameter Minimum Value Typical Value Maximum Value
 Central Wavelength, nm 784.7 784.8 785.1
 Longitudinal modes - Single -
 Spectral line width FWHM, pm - 0.1 1 1
 Output power, mW - 80 2 -
 Side-mode suppression ratio (SMSR), dB 40 50 60
 Power stability, % (RMS, 8 hrs) - 1 3 2
 Power stability, % (peak-to-peak, 8 hrs) - 2 4 3
 Noise, % (RMS, 20 Hz to 20 MHz) - 0.25 5 0.6
 Control interface type - UART 0 -
 Operation mode - APC (CW) -
 Modulation bandwidth, MHz - optional 6 -
 Input voltage, VDC 4.8 5 5.3
 External power supply requirement - +5 V DC, 1.5 A -
 Dimensions, mm - 50 x 30 x 18 7 -
 Fiber Length, m 0.95 1 1.1
 Heat-sinking requirement, °C/W - 1 -
 Optimum heatsink temperature, °C 15 20 30
 Warm up time, mins (cold start) 0.2 1 2
 Temperature stabilization - Yes -
 Overheat protection - Yes -
 Storage temperature, °C (non-condensing) -10 - 50
 Net weight, kg 0.1 0.12 0.14
 Max. power consumption, W 0.4 2 10
 Warranty, months (op. hrs) - 14 (10000) 8 -
 RoHS - Yes -
 CE compliance - - General Product Safety Directive (GPSD) 2001/95/EC
- (EMC) Directive 2004/108/EC
-
 Laser Safety Class - 3B -
 OEM lasers are not compliant with - IEC60825-1:2014 (compliant using additional accessories) -
 Country of origin - Lithuania -
1 Measured with a scanning Fabry-Perot interferometer having 7.5 Mhz resolution, with scanning frequency of about 10 Hz. Interferometer testing is not provided for each laser being manufactured, the standard test is OSA measurement with 10-20 pm resolution instead.
2 The optical power of SLM lasers shall not be tuned and SLM performance is not guaranteed at power ratings other than the factory preset. However, the power setting capability is not disabled. External attenuators are recommended.
3 The long term power test is carried out at constant laser body temperature (+/-0.1 ‎°C) using an optical power meter with an input bandwidth of 10 Hz. The actual measurement rate has a period of about 20 seconds to 1 minute.
4 The long term power test is carried out at constant laser body temperature (+/-0.1 ‎°C) using an optical power meter with an input bandwidth of 10 Hz. The actual measurement rate has a period of about 20 seconds to 1 minute.
5 Noise level is measured with a fast photodiode connected to an oscilloscope. The overall system bandwidth is from 2 kHz to 20 MHz.
0 Break-out-boxes AM-C8 and AM-H10 can be used for conversion of UART communication to either USB or RS232.
6 TTL digital modulation up to 10 MHz.
7 Excluding control interface pins and an output window/fiber assembly.
8 Whichever occurs first. The laser has an integrated operational hours counter.
Note: Product specifications are subject to change without prior notice to improve reliability, function or design or otherwise.
Typical spectrum

Spectrum of 785 NM SLM LASER (VBG DIODE; SM FIBER)
Typical spectrum of 0785 nm diode laser. Measured with 20 pm resolution.
Typical Near Field

Near field beam profile of 785 NM SLM LASER (VBG DIODE; SM FIBER)
Drawing

Drawing of 785 NM SLM LASER (VBG DIODE; SM FIBER)
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