Wei Fang, Sun Yanguang, Chen Dijun, Fang Zujie, Cai Haiwen, Qu Ronghui. Modulation-free frequency stabilization system of external cavity diode laser based on Sagnac loop[J]. Infrared and Laser Engineering, 2013, 42(4): 885-889.
| Citation:
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Wei Fang, Sun Yanguang, Chen Dijun, Fang Zujie, Cai Haiwen, Qu Ronghui. Modulation-free frequency stabilization system of external cavity diode laser based on Sagnac loop[J]. Infrared and Laser Engineering, 2013, 42(4): 885-889.
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Modulation-free frequency stabilization system of external cavity diode laser based on Sagnac loop
- 1.
Shanghai Key Laboratory of All Solid-state Laser and Applied Techniques,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China
- Received Date: 2012-08-10
- Rev Recd Date:
2012-09-11
- Publish Date:
2013-04-25
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Abstract
A novel frequency stabilization method of ECDL using a phase difference biased Sagnac loop was proposed. This scheme uses polarization beam splitter (PBS) for input and output of Sagnac loop instead of the beam splitter, and a quarter waveplate to introduce a bias phase difference of /2 between the counterpropagating pump and probe beams with perpendicular polarization. A polarizer is inserted after the output of the Sagnac loop, so that the dispersion phase shift induced by Rb resonance can be obtained. By this method, an error signal with larger amplitude can be acquired, which provides an ideal error signal to stabilize the frequency of the laser. Compared with the previously proposed method, whose bias phase difference is introduced by polarization dependent phase shift in total-internal-reflection(sin=0.64), the amplification factors of dispersive signal sin can be achieved to theoretical maximum. This scheme is simple, robust, and has potential applications in atomic physics experiment and so on.
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References
|
[1]
|
Yuan Jie, Chen Xuzong, Chen Wenlan, et al. Structure design and third-harmonic frequency stabilization of the external cavity semiconductor laser[J]. Infrared and Laser Engineering, 2007, 36(2): 152～154. (in Chinese) |
|
[2]
|
|
|
[3]
|
Zhang Yinan, Tan Yidong, Zhang Shulian. Temperature control system for frequency stabilization of total internal cavity microchip laser[J]. Infrared and Laser Engineering, 2012, 41(1): 102～106. (in Chinese) |
|
[4]
|
|
|
[5]
|
|
|
[6]
|
Bjorklund G C. Frequency-modulation spectroscopy: a new method for measuring weak absorptions and dispersions[J]. Optics Letters, 1980, 5(1): 15-17. |
|
[7]
|
Sukenik C I, Busch H C, Shiddiq M. Modulation-free laser frequency stabilization and detuning[J]. Optics Communications, 2002, 203(1-2): 133-137. |
|
[8]
|
|
|
[9]
|
|
|
[10]
|
Corwin K L, Lu Z T, Hand C F, et al. Frequency-stabilized diode laser with the Zeeman shift in an atomic vapor[J]. Applied Optics, 1998, 37(15): 3295-3298. |
|
[11]
|
Wasik G, Gawlik W, Zachorowski J, et al. Laser frequency stabilization by Doppler-free magnetic dichroism[J]. Applied Physics B, 2002, 75(6): 613-619. |
|
[12]
|
|
|
[13]
|
|
|
[14]
|
Pearman C P, Adams C S, Cox S G, et al. Polarization spectroscopy of a closed atomic transition: applications to laser frequency locking[J]. Journal of Physics B: Atomic, Molecular and Optical Physics, 2002, 35(24): 5141-5151. |
|
[15]
|
|
|
[16]
|
Yutaka Y, Takeshi U, Takuro M, et al. Frequency stabilization of a laser diode with use of light-induced birefringence in an atomic vapor[J]. Applieed Optics, 2003, 42(33): 6645-6649. |
|
[17]
|
|
|
[18]
|
Ratnapala A, Vale C J, White A G, et al. Laser frequency locking by direct measurement of detuning[J]. Optics Letters, 2004, 29(23): 2704-2706. |
|
[19]
|
Robins N P, Slagmolen B J J, Shaddock D A, et al. Interferometric, modulation-free laser stabilization[J]. Optics Letters, 2002, 27(21): 1905-1907. |
|
[20]
|
|
|
[21]
|
|
|
[22]
|
Wei F, Chen D J, Fang Z J, et al. Modulation-free frequency stabilization of an external cavity diode laser with dispersion spectroscopy based on sagnac interferometer[J]. Optics Letters, 2010, 35(22): 3853-3855. |
|
[23]
|
Demtrder W. Laser Spectroscopy: Basic Principles[M]. Kaiserslautern: Springer, 2008: 66-69. |
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